单词	randomly
释义	randomran‧dom /ˈrændəm/ ●●○ AWL adjective Word Origin WORD ORIGINrandom Origin: 1300-1400 Old French randon ‘great speed or force’, from randir ‘to run’ Examples EXAMPLES FROM OTHER DICTIONARIES Random dashes of color highlight the painting. random drug tests A few random shots were fired, but the battle was over. The union believes that the random drug testing of employees is an invasion of their privacy. EXAMPLES FROM THE CORPUS At random, I opened an earlier page. Because at random was exactly how humans were trying to restore ecosystems. Contemporary chaos theory talks about so-called strange attractors, which are the ordering principles within such apparently random patterns. I have also decided to do some random attacks as a means of confusing law enforcement. It was the random collisions melding the rocky substances, plus turbulent accretions, that were to make up the inner planets. Median and minimum arterial-alveolar oxygen tension ratios for ventilated infants on the first day were significantly lower in the random group. To keep shifting the target all the time makes life impossible and a sort of random walk develops. Thesaurus Longman Language Activatorwhen things are done, chosen etc by chance► at random if you do or choose things at random , you do or choose them without using any plan or system: · The forms were distributed at random to people passing by.· While he waited, he picked up a magazine, turned to a page at random, and started reading.· Twenty students were chosen at random to take part in the experiment. ► random something that is random is done or chosen without using any plan or system: · The union believes that the random drug testing of employees is an invasion of their privacy.· A few random shots were fired, but the battle was over. ► arbitrary something that is arbitrary is decided or arranged without any reason, plan, or system, especially in a way that seems unfair: · The way the programme of events is organized seems completely arbitrary to me.· The fans complained about the apparently arbitrary distribution of tickets for the next game. Collocations COLLOCATIONS FROM THE ENTRYnouns► a random sample · A test was carried out on a random sample of the cattle. ► a random selection · He looked at a random selection of the files. ► a random number · Pick a random number. ► a random sequence · They were asked to memorize a random sequence of numbers. ► random checks/tests · He believes the police should be able to carry out random breath tests. ► random violence · The family were caught up in the random violence that haunts a neighbourhood ruled by gangs. adverbs► completely/entirely random · The atomic particles seem to move in a completely random direction. ► apparently/seemingly random · a wave of apparently random attacks ► purely/truly random · a purely random sequence of numbers phrases► in random order · The names are in random order. COLLOCATIONS FROM OTHER ENTRIES► a random check (=done without any definite pattern)· Customs officials were carrying out random checks on cars. ► a random error (=one that is not like others or part of a pattern)· This may seem like a random error, but in fact it is repeated once in every 5,000 samples. ► random selection (=choosing without any reason or order)· the random selection of genes COLLOCATIONS FROM THE CORPUSADVERB► apparently · Where such chains exist, an apparently random journey through a network becomes a fairly predictable matter.· There are movements of Rabari, swirls and swoops apparently random but fractal in nature.· However, computer scientists have developed programs which produce numbers that are apparently random.· It is found as an apparently random image, often in incongruous, surrealist-like juxtapositions.· The great inquisitor began with an hour of apparently random questions.· Contemporary chaos theory talks about so-called strange attractors, which are the ordering principles within such apparently random patterns.· The passages did not go straight, but turned at right angles and ran into one another in an apparently random fashion.· Dotted overhead, quite motionless and forming apparently random patterns, were myriads of tiny black specks. ► completely · This helps to balance the overall picture, rather than create four completely random designs. NOUN► access · Playing time is longer about one hour of straight playing time per side - but random access is less accurate.· In fact, it had no random access memory at all.· Myth-1: All disk drive requests are random access.· It comes with eight megabytes of random access memory, a must since it also comes with Windows 95.· In order to do this with the minimum access time, random access files are necessary.· The difficultly of achieving high-speed random access can be reduced by careful design of the data layout.· Please specify Y if this media unit is a serial device or N if it is a random access device.· The combination with videodisc players is particularly interesting because of the ways random access can be exploited. ► allocation · The t treatments are applied within each block by random allocation to the experimental units. ► check · More random checks are to be held over the next few weeks.· Afterwards he was tested positive in a random check.· A number of local law societies felt that random checks would be more productive in revealing problems. ► drug · Under the governing body's initiative, some karate competitions now include a random drug test.· Later the same year, a pair of runners refused to submit to random drug tests.· The International Squash Rackets Federation will introduce random drug testing at next year's world championships.· The penalty agreed to on the cocaine charge includes four years of supervised probation and random drug testing.· It thinks universal or random drug testing of employees is an unwarranted invasion of privacy.· They instituted random drug testing; they searched flight bags.· The Court of Appeals had just upheld random drug testing for high school cheerleaders in Indiana. ► error · This section then describes some validation parameters including accuracy and precision, random errors, calibration curves and noise.· This involved initial tests of short and longer term random error and spiking recovery. ► event · Injuries due to accidents are not random events.· Dunn said the toys have a lot of random events that keep things interesting.· The reply has been that this converts effects into what they are not: chance or random events, and inexplicable events.· So far we have treated impacts as single, random events.· The random event is frightening to all of us because we are defenseless.· Most random events, of course, would be over the oceans, and would almost certainly not be seen. ► fluctuations · Apart from random fluctuations, the deleterious effect of too short and too long spacing is seen for each order birth. ► group · This was less likely in infants in the random group, half of whom underwent cord clamping within 10 seconds of delivery.· Median and minimum arterial-alveolar oxygen tension ratios for ventilated infants on the first day were significantly lower in the random group.· Three infants in the random group developed chronic lung disease.· One infant in the random group later died unexpectedly at home.· In the random group management was at the attendant's discretion.· Seventeen infants were enrolled in the regulated group and 19 in the random group.· Only one infant in the random group was held below the introitus.· Or were the knives sent to a random group of people to confuse the hunt for either the killer or the hoaxer? ► motion · His hands were moving too - constantly, with that same undersea random motion.· The gases inside the capsule will be exerting a pressure due to their random motion.· The pressure of the gas is also due to the random motion of molecules.· There is a subtle difference between the random motion of molecules and their coherent motion.· In the atmosphere, the pressure is due to random motion, but wind is due to a degree of coherent motion.· The particles are in continuous random motion. 3. ► mutation · When they seemed to resemble each other rather too closely, he introduced random mutations in the offspring.· The genes that cause the elaborate ornament or long tail to appear are subject to random mutation.· Our random mutation is essential because it is unnecessary.· The more elaborate the ornament, the more likely that a random mutation will make the ornament less elaborate, not more.· We want them to emerge solely as a result of cumulative selection of random mutations.· It follows that some process other than random mutation and selection must be involved. ► number · By using tables of random numbers the children were allocated to three groups: adenotonsillectomy, adenoidectomy, and no surgery.· Littlewoods has reworked its pools coupons to accommodate customers who simply want to pick random numbers.· The human expertise in computer-derived works could be found to reside in the programs which produced the lists of random numbers.· That is, a new key is generated as a random number for each message.· Both the microbiologist and the pathologist were blinded to the treatment by coding the samples with random numbers.· They were divided by random numbers into two groups, one receiving oxygen during gastroscopy and the other receiving air.· The trainer would then shout out a random number, for example, six.· Thus we pick a random number in the range 1 to 586÷2 293. ► numbers · By using tables of random numbers the children were allocated to three groups: adenotonsillectomy, adenoidectomy, and no surgery.· Littlewoods has reworked its pools coupons to accommodate customers who simply want to pick random numbers.· The human expertise in computer-derived works could be found to reside in the programs which produced the lists of random numbers.· Both the microbiologist and the pathologist were blinded to the treatment by coding the samples with random numbers.· They were divided by random numbers into two groups, one receiving oxygen during gastroscopy and the other receiving air.· Each vertex in the coverage was perturbed by selecting random numbers from a uniform distribution, with ranges defined in Table 6.2.· If we choose names out of a hat, or by using random numbers, then we are doing truly random sampling.· The squares were chosen with a table of random numbers. ► order · Records are often processed in a random order.· They were presented in random order, and the respondents were asked to judge the acceptability of the sentences.· Investigators and subjects were blinded to insulin type and the insulins were given in random order.· A number of sentences that describe a sequence of events are presented on the screen in random order. ► pattern · Make a random pattern of, say, square dots on a transparent sheet of paper, and make an identical copy.· Contemporary chaos theory talks about so-called strange attractors, which are the ordering principles within such apparently random patterns.· So the seemingly random patterns of the yarrow stalks provide a bridge between your question and the relevant hexagram.· Dotted overhead, quite motionless and forming apparently random patterns, were myriads of tiny black specks.· Daunting, too, is the random pattern of attacks, both in location and time. ► sample · Against this must be set a non-response about twice that for a random sample involving house calls.· The results are not a random sample of the vehicles on the road at all.· For instance, suppose we want to take a random sample of ten students from a class of 50.· Thus all members of a simple random sample of 30 pupils from a mixed school could be girls.· The research involves collecting data from two random samples.· Altogether, 60 speakers were recorded, taken from a random sample of 120 households. ► sampling · The figures are breathtaking, too, as a random sampling will illustrate.· If the latter were true, random sampling of the normal mucosa would be less reliable as a means of ascertaining risk.· Describe and comment on the technique of random sampling.· In addition he suggests a random sampling of enquiries for further in-depth analysis.· If we choose names out of a hat, or by using random numbers, then we are doing truly random sampling. ► selection · The random selection of units was vital.· Meanwhile, the cyber gods controlling the random selection virtually ignored some large districts in other areas of the state.· Test data was gathered by random selection from each domain until the target of approximately 17 sentences per domain had been met.· Pete Wilson and the state Lottery, which has some expertise in random selection.· It also ruled out random selection or co-option of experts.· Percentage measures of performance should therefore be compared to that expected from random selection.· For a random selection of 20 crops, the score was 5.· Instead an intelligence officer had ploughed through Mills' personal effects and leafed through a random selection of files. ► sequence · How can a series of fixed instructions cause the computer to come up with a random sequence of results?· If n is negative the pseudo random sequence generator is set to a number based on n and n is returned.· There were 160 trials in random sequence.· Even proteins formed as a random sequence of amino acids have some slight catalytic activity. ► variable · We shall assume that this deviation is a random variable,, with mean of zero and constant variance,. ► variation · One doctor raised the issue of random variations in service needs addressed in a paper by Crump etal.· So much for single-step selection of random variation.· However, many of them show random variations in brightness lasting only a few months or, on occasion, days.· Usually there will be some random variation of this sort superposed on a relatively constant overall pattern. ► violence · But is it inequality that leaves women subject to random violence?· We have enough random violence to keep us busy well past the End Days.· Soccer fans were its contribution to the global tradition of random violence.· Even those of high station in so-called safe neighborhoods can not escape the tragedy of random violence.· The two major criticisms aimed at Farc are that it recruits children and that it carries out acts of random violence.· Apparently random violence in certain streets enlivened the working day - but sometimes left physical scars. ► walk · The prices of securities follow a random walk.· Finally, there are great fund managers for whom the random walk may not be so random.· Share prices follow a random walk without any underlying trend. 5.· Each protozoon makes a biassed random walk about the screen.· To keep shifting the target all the time makes life impossible and a sort of random walk develops.· The random walk in one dimension is discussed in textbooks of thermo-dynamics, as is the three-dimensional random walk.· It would be totally random, so it could be called a random walk. ► way · It had all just happened in the random way things do.· A hardware error on the other hand happens in a more or less random way.· I would not calculate this time, this time I would try to select my route in a random way.· Such specifics appeared to receive attention in a fairly random way, and there were notable omissions from the specifics attended to. Phrases PHRASES FROM THE ENTRY► at random The forms were distributed at random to people passing by. Twenty students were chosen at random to take part in the experiment. We selected the agencies at random from the phone book. While he waited, he picked up a magazine, turned to a page at random, and started reading. Word family WORD FAMILYnounrandomnessadjectiverandomadverbrandomly 1happening or chosen without any definite plan, aim, or pattern:  The company has introduced random drug testing of its employees. A few random shots were fired. We looked at a random sample of 120 families. a random selection of women who were in the shop2at random without any definite plan, aim, or patternchoose/select/pick something at random The gang picked their victims at random.3informal strange, unusual, or unexpected:  She's great - she's just so random!—randomly adverb:  seven randomly chosen numbers—randomness noun [uncountable]COLLOCATIONSnounsa random sample· A test was carried out on a random sample of the cattle.a random selection· He looked at a random selection of the files.a random number· Pick a random number.a random sequence· They were asked to memorize a random sequence of numbers.random checks/tests· He believes the police should be able to carry out random breath tests.random violence· The family were caught up in the random violence that haunts a neighbourhood ruled by gangs.adverbscompletely/entirely random· The atomic particles seem to move in a completely random direction.apparently/seemingly random· a wave of apparently random attackspurely/truly random· a purely random sequence of numbersphrasesin random order· The names are in random order.
随便看	Simenon, Georges simian similar similarity similarly simile simmer simnel cake Simon, Neil Simon, Paul simpatico simper simple simple fracture simple interest simple-minded Simple Simon simpleton simplicity simplification simplify simplistic simplistically simply Simpson, O.J.

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