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n (1) 底(座)，基礎(chǔ) (bottom of sth， esp the part on which sth rests or is supported) [C]：Soft ground makes a poor～for buildings.松軟的地面不適合蓋樓房。the～of a pillar/a column/a building/a mountain/a machine 柱子/柱子/建筑物/山/機器的基座(部);the～of the thumb大拇指的基部; near the～of the bird's tail 鳥尾的基部附近;at the～of a cliff在懸崖底部處;the lamp～燈座;The～of the statue is made of stone.這座雕像的基座是石造的。stand/rest on a ...～立/置于……的底座上;〖同〗bottom， foundation， stand， support;〖反〗top， peak;

(2) 起點， 基點(礎(chǔ)) (standing point; part from which sth develops or originates) [C] (fig)：This innovation was regarded as a sensible～for teaching and research. 這一新思想被視為教學(xué)與研究的合理基礎(chǔ)。the～of one's argument/for the novel/of needed reforms辯論的根據(jù)/小說的原型/必要改革的基礎(chǔ);use a novel as the～for a film以一小說作為一電影的素材;The league had no real power～on which it could build.該聯(lián)盟沒有賴以建立的真正權(quán)力基礎(chǔ)。～rate 基礎(chǔ)利率;〖同〗foundation，basis;

(3) 基地，根據(jù)地 (central place or starting-point at which armed forces， expeditions， etc have their supplies stored) [C]：on an air/army ～在空軍/部隊基地;on a naval/supply/missile/training/revolutionary/military～在海軍/供給/導(dǎo)彈/訓(xùn)練/革命/軍事基地;return to one's～camp 回(登山)大本營;The submarines returned to the～.潛艇返回基地。use a city as a～for one's travels in a country 把一個城市作為在一個國家內(nèi)旅行的基地;The company made the city their～.這家公司以這個城市為基地。establish/set up/maintain a～建立/設(shè)立/保持一個基地;〖同〗camp;

(4) 群眾(地域)基礎(chǔ)(尤指政治上者 )(group or area favourable to a person， political party， plan， etc) [C]：She rose to power without a～of support in the working class. 她執(zhí)政沒有工人階級支持的群眾基礎(chǔ)。

(5) 底線(邊) ((in mathematics) line or surface on which a figure stands) [C]：the～of a triangle/a pyramid三角形的底邊/錐體的底面;draw a square on the～(line)“ab”在底邊ab上畫一正方形;

(6)基數(shù) ((in mathematics) number on which a system of numbers is built up) [C]：Ordinary numbers use～10， but many computers work to～2. 普通數(shù)字以10為基數(shù)， 但許多計算機用2作基數(shù)。The decimal system uses 10 as a～.十進制以10為基數(shù)。

(7) 基本成分 (chief element or substance of a mixture) [C]：a drink with a rum～以蘭姆酒為基本成分的飲料;The soup has a tomato～.這湯主要是用西紅柿做的。This paint has oil as a～. 這種顏料以油為基本成分。a paint with an oil～以油為基本成分的顏料;

(8) 壘 ((in the game of baseball) any of the four positions to be reached by a runner)[C]：get back to～回到壘中;the～runners 跑壘的運動員;

off base 1) 有錯 (AmE)(infml)：Your idea is completely off～.你的想法完全錯了。2) 未加準(zhǔn)備 (AmE)(infml)：Her question caught him off～.她的問題難住了他。

→′baseless adj 無根據(jù)的;′basement n 地下室;′baseline n (網(wǎng)、棒)球場底線;basic adj;basis n;

vt (1) 以……為根據(jù)(基礎(chǔ))，基于 (use sth as a foundation， evidence， etc for sth else) [T+n+prep(on)]：The house is～d on solid rock.這房子建在堅固的巖石上。～one's opinions on facts/the evidence使自己的意見以事實/證據(jù)為依據(jù);～one's hopes on the good news把那好消息作為希望的根據(jù);～a judgement on available evidence根據(jù)可得到的證據(jù)進行判斷;What do you～your accusations on? 你根據(jù)什么提出控告? The novel is～d on historical facts. 這部小說以歷史事實為基礎(chǔ)。The song is～d on an old folk tune. 這首歌曲以一只古老的民歌為基調(diào)。The movie is～d on a scientist's life. 這部電影以一位科學(xué)家的一生為原型。Direct taxation is～d on income.直接稅根據(jù)收入計算。The new agreement is～d on his proposal. 新的協(xié)議是以他的建議為基礎(chǔ)擬定的。

(2) 把……派駐于…… (place sb in (a place from which to work and travel)) [尤pass：T+n+prep(in/at)，T+n+adv]：The headquarters/Most of our staff are～d in New York. 總部設(shè)在/大多數(shù)工作人員駐在紐約。Our group was～d in Paris.我們小組派駐在巴黎。We～part of our fleet in the Pacific. 我們把部分艦隊駐扎在太平洋。Where are you～d now? 你們現(xiàn)在被派駐在什么地方? 〖同〗 station， locate;

【辨異】base與basis和foundation都指“基礎(chǔ)”。base多用于具體意義，指支撐物體的底部，如：the base of a lamp (燈座);basis多用于比喻意義，指抽象的基礎(chǔ)，如：basis of friendship (友誼的基礎(chǔ))。這兩個詞的形容詞都是basic。foundation 僅指建筑物地面以下的基礎(chǔ)部分，如：the foundation of a skyscraper(摩天大樓的地基)。