| 单词 | rodent |
| 释义 | rodent (once / 5191 pages) n A rodent is a small furry mammal whose teeth never stop growing. The rodent species includes mice, rats, squirrels, beaver, and many more. Mice are known for their shyness, and lemmings are tragically famous for their supposed mass suicides when their populations exceed food supplies, but when you call someone a rodent, it's an insult. It's akin to calling them a rat. You're suggesting they eat garbage, live in sewers and stand for all that is dirty and vile. WORD FAMILYrodent: rodents USAGE EXAMPLESIt shows that, in rodents at least, strenuous exercise seems to beneficially change how certain genes work inside the brain. New York Times(Jun 15, 2016) There the inmates shouted and wailed through the night, he said, and the place was thick with rodents. New York Times(Dec 28, 2016) Then the researchers put all the rodents on a diet. New York Times(Dec 27, 2016) n relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing Syn|Hypo|Hyper gnawer mouse any of numerous small rodents typically resembling diminutive rats having pointed snouts and small ears on elongated bodies with slender usually hairless tails ratany of various long-tailed rodents similar to but larger than a mouse murinea rodent that is a member of the family Muridae water ratany of various amphibious rats New World mousea variety of rodent Ondatra zibethica, muskrat, musquashbeaver-like aquatic rodent of North America with dark glossy brown fur Florida water rat, Neofiber alleni, round-tailed muskratof Florida wetlands Sigmodon hispidus, cotton ratdestructive long-haired burrowing rat of southern North America and Central America wood rat, wood-ratany of various small short-tailed rodents of the northern hemisphere having soft fur grey above and white below with furred tails and large ears; some are hosts for Ixodes pacificus and Ixodes scapularis (Lyme disease ticks) hamstershort-tailed Old World burrowing rodent with large cheek pouches gerbil, gerbillesmall Old World burrowing desert rodent with long soft pale fur and hind legs adapted for leaping lemmingany of various short-tailed furry-footed rodents of circumpolar distribution hedgehog, porcupinerelatively large rodents with sharp erectile bristles mingled with the fur jumping mouseany of several primitive mouselike rodents with long hind legs and no cheek pouches; of woodlands of Eurasia and North America jerboamouselike jumping rodent dormousesmall furry-tailed squirrel-like Old World rodent that becomes torpid in cold weather squirrela kind of arboreal rodent having a long bushy tail prairie dog, prairie marmotany of several rodents of North American prairies living in large complex burrows having a barking cry marmotstocky coarse-furred burrowing rodent with a short bushy tail found throughout the northern hemisphere; hibernates in winter beaverlarge semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges Aplodontia rufa, mountain beaver, sewellelbulky nocturnal burrowing rodent of uplands of the Pacific coast of North America; the most primitive living rodent cavyshort-tailed rough-haired South American rodent Dolichotis patagonum, marahare-like rodent of the pampas of Argentina Hydrochoerus hydrochaeris, capibara, capybarapig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent Dasyprocta aguti, agoutiagile long-legged rabbit-sized rodent of Central America and South America and the West Indies; valued as food Cuniculus paca, pacalarge burrowing rodent of South America and Central America; highly esteemed as food mountain pacarodent of mountains of western South America Myocastor coypus, coypu, nutriaaquatic South American rodent resembling a small beaver; bred for its fur Chinchilla laniger, chinchillasmall rodent with soft pearly grey fur; native to the Andes but bred in captivity for fur mountain chinchilla, mountain viscachaa rodent native to the mountains of Chile and Peru and now bred in captivity Lagostomus maximus, chinchillon, viscachagregarious burrowing rodent larger than the chinchillas abrocome, chinchilla rat, rat chinchillaratlike rodent with soft fur and large ears of the Andes mole ratfurry short-limbed tailless rodent resembling a true mole in habits and appearance; of eastern Europe and Middle East mole ratAfrican rodent resembling a mole in habits and appearance sand ratsmall nearly naked African mole rat of desert areas pocket ratany of various rodents with cheek pouches Mus musculus, house mousebrownish-grey Old World mouse now a common household pest worldwide Micromyx minutus, harvest mousesmall reddish-brown Eurasian mouse inhabiting e.g. cornfields field mouse, fieldmouseany nocturnal Old World mouse of the genus Apodemus inhabiting woods and fields and gardens nude mousea mouse with a genetic defect that prevents them from growing hair and also prevents them from immunologically rejecting human cells and tissues; widely used in preclinical trials Norway rat, Rattus norvegicus, brown ratcommon domestic rat; serious pest worldwide Rattus rattus, black rat, roof ratcommon household pest originally from Asia that has spread worldwide bandicoot rat, mole ratburrowing scaly-tailed rat of India and Ceylon jerboa ratlarge Australian rat with hind legs adapted for leaping beaver ratamphibious rat of Australia and New Guinea American harvest mouse, harvest mouseany of several small greyish New World mice inhabiting e.g. grain fields wood mouseany of various New World woodland mice dusky-footed wood rata wood rat with dusky feet field mouse, voleany of various small mouselike rodents of the family Cricetidae (especially of genus Microtus) having a stout short-tailed body and inconspicuous ears and inhabiting fields or meadows Neotoma cinerea, bushytail woodrat, pack rat, packrat, trade ratany of several bushy-tailed rodents of the genus Neotoma of western North America; hoards food and other objects Neotoma floridana, eastern woodratlarge greyish-brown wood rat of the southeastern United States Oryzomys palustris, rice rathardy agile rat of grassy marshes of Mexico and the southeastern United States Cricetus cricetus, Eurasian hamstera variety of hamster common to Europe and Asia Mesocricetus auratus, Syrian hamster, golden hamstersmall light-colored hamster often kept as a pet jirdgerbil of northern Africa Meriones unguiculatus, tamarisk gerbila gerbil that is popular as a pet Meriones longifrons, sand ratsouthern European gerbil European lemming, Lemmus lemmusnotable for mass migrations even into the sea where many drown Lemmus trimucronatus, brown lemmingof northwestern Canada and Alaska gray lemming, grey lemming, red-backed lemmingOld World lemming pied lemmingNorth American lemming having a white winter coat and some claws much enlarged Synaptomys cooperi, southern bog lemmingof low bogs and meadows of northeastern and central United States and southern Canada Synaptomys borealis, northern bog lemmingof wet alpine and subalpine meadows of Canada and Alaska Old World porcupineterrestrial porcupine New World porcupinearboreal porcupine Zapus hudsonius, meadow jumping mousewidely distributed in northeastern and central United States and Canada typical jerboasmall nocturnal jumping rodent with long hind legs; of arid parts of Asia and northern Africa Jaculus jaculusa variety of jerboa Glis glis, loirlarge European dormouse Muscardinus avellanarius, hazel mousea variety of dormouse lerotdormouse of southern Europe and northern Africa tree squirrelany typical arboreal squirrel gopher, ground squirrel, spermophileany of various terrestrial burrowing rodents of Old and New Worlds; often destroy crops Cynomys ludovicianus, blacktail prairie dogtail is black tipped Cynomys gunnisoni, whitetail prairie dogtail is white tipped Tamias striatus, eastern chipmunk, ground squirrel, hackee, striped squirrelsmall striped semiterrestrial eastern American squirrel with cheek pouches chipmunka burrowing ground squirrel of western America and Asia; has cheek pouches and a light and dark stripe running down the body Eutamius asiaticus, Eutamius sibiricus, baranduki, baronduki, barunduki, burundukiterrestrial Siberian squirrel American flying squirrelNew World flying squirrels Marmota monax, groundhog, woodchuckreddish brown North American marmot Marmota caligata, hoary marmot, whistler, whistling marmotlarge North American mountain marmot Marmota flaviventris, rockchuck, yellowbelly marmotheavy-bodied yellowish-brown marmot of rocky areas of western North America Asiatic flying squirrelnocturnal rodent of Asia having furry folds of skin between forelegs and hind legs enabling it to move by gliding leaps Castor fiber, Old World beavera European variety of beaver Castor canadensis, New World beavera variety of beaver found in almost all areas of North America except Florida Cavia cobaya, guinea pigstout-bodied nearly tailless domesticated cavy; often kept as a pet and widely used in research Cavia porcellus, aperea, wild cavySouth American cavy; possibly ancestral to the domestic guinea pig eutherian, eutherian mammal, placental, placental mammal mammals having a placenta; all mammals except monotremes and marsupials |
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