单词	base
释义	noun | verb | adjective basebase1 /beɪs/ ●●● S2 W1 noun Collocations COLLOCATIONS► military/naval/air etc. base  Several military bases will be closed this year. ► economic base  They hope to attract new business and strengthen the city’s economic base (=things that produce jobs and money). ► customer base  The company’s customer base (=people who buy its goods) is growing. ► tax base  New jobs in the area will improve the city’s tax base (=the people who pay taxes). ► manufacturing base  Volkswagen needed a manufacturing base (=companies that make things) in Asia to gain a share of the market. Thesaurus THESAURUSlowest part► bottom a) the lowest part of something:  My name is on the very bottom of the list (=used to emphasize that you mean the lowest position).b) the part of a ship that is below water ► base the lowest part of something that is tall or thin, especially the part that supports it:  The lamp has a square base. ► foundation a solid base that is built below the ground to support a building:  The foundation of the building was cracked in the earthquake. ► foot the lowest part of something tall or high, such as a mountain, tree, or set of stairs:  They stayed in a small cabin at the foot of the mountain. 1LOWEST PART [countable usually singular] the lowest part of something, or the surface at the bottom of something SYN bottom:  a black vase with a round basebase of Pour the concrete around the base of the post. He died of a blow to the base of the skull. a lake at the base of the mountain► see thesaurus at bottom12KNOWLEDGE/IDEAS [uncountable] the most important part of something, from which new ideas develop:  India has a good scientific research base.base for Reading to your child provides a solid base for educational success.3COMPANY/ORGANIZATION [countable, uncountable] the main place from which a group, company, or organization controls its activities:  Microsoft’s base is in Redmond, Washington.base for He used his home as the base for his printing business.4MILITARY [countable] a place where people in a military organization live and work: military/naval/air etc. base Several military bases will be closed this year.5PEOPLE/GROUPS [countable usually singular] the people, money, groups, etc. that form the main part of something:  They hope to attract new business and strengthen the city’s economic base (=things that produce jobs and money). The company’s customer base (=people who buy its goods) is growing. New jobs in the area will improve the city’s tax base (=the people who pay taxes). Volkswagen needed a manufacturing base (=companies that make things) in Asia to gain a share of the market. → see also power base6off base informal completely wrong:  If he thinks there was any discrimination involved, he’s way off base.7touch base (with somebody) to talk with someone in order to find out what is happening about something:  I just wanted to touch base with you.8cover/touch all the bases to prepare for or deal with a situation thoroughly:  The police have called in experts to make sure they’ve covered all the bases.9SPORTS [countable] one of the four places that a player must touch in order to get a point in games such as baseball or softball10SUBSTANCE/MIXTURE [singular, uncountable] the main part of a substance to which something else is later added:  You should paint the outside walls with an oil base.base for Onions form the base for many curries. → see also base metal11CHEMISTRY [countable] science, chemistry a chemical substance that combines with an acid to form a salt12NUMBERS [countable usually singular] math the number in relation to which a number system or mathematical table is built up:  The decimal system uses a base of 10.13SHAPE [countable] math, geometry the lowest side or bottom face of a flat or solid geometric shape: base of the base of a cone noun | verb | adjective basebase2 ●●● S2 W1 verb [transitive usually passive] Etymology ETYMOLOGYbase2 Origin: 1300-1400 Old French Latin basis; ➔ BASIS Verb Table VERB TABLE base Simple Form Present I, you, we, they base he, she, it bases Past I, you, he, she, it, we, they based Present perfect I, you, we, they have based he, she, it has based Past perfect I, you, he, she, it, we, they had based Future I, you, he, she, it, we, they will base Future perfect I, you, he, she, it, we, they will have based Continuous Form Present I am basing he, she, it is basing you, we, they are basing Past I, he, she, it was basing you, we, they were basing Present perfect I, you, we, they have been basing he, she, it has been basing Past perfect I, you, he, she, it, we, they had been basing Future I, you, he, she, it, we, they will be basing Future perfect I, you, he, she, it, we, they will have been basing to establish or use somewhere as the main place for your business or work: be based in/at something The toy company is based in Trenton, New Jersey.base something on/upon something phrasal verb to use particular information or facts as a point from which to develop an idea, plan, etc.:  What do you base your theory on? The movie was based on a true story. noun | verb | adjective basebase3 adjective Etymology ETYMOLOGYbase3 Origin: 1300-1400 Old French bas, from Medieval Latin bassus short, low 1base pay/salary the amount of money that someone receives as his or her regular pay, before any special payments or benefits are added2literary not having good moral principles:  base passions [Origin: 1300–1400 Old French bas, from Medieval Latin bassus short, low]
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