| 释义 |
base1/beis/ n. & v.●n. 1a a part that supports from beneath or serves as a foundation for an object or structure 底，基底，底座 b a notional structure or entity on which something draws or depends (概念的)根据，基础 power base 权力基础; economic base 经济基础 2 a principle or starting point; a basis 原则，出发点；基 3 esp. Mil. a place from which an operation or activity is directed (尤)【军】基地，根据地，据点 4a a main or important ingredient of a mixture (混合物中的)基本成分 b a substance, e.g. water, in combination with which pigment forms paint etc. 媒染剂(如颜料构成颜色等中的水) 5 a substance used as a foundation for make-up 打底用的化妆品 6a Chem. a substance capable of reacting with an acid to form a salt and water, or (more broadly) of accepting or neutralizing hydrogen ions 【化】碱(可广义接纳、中和氢离子) b Biochem. a purine or pyrimidine group as in a nucleotide or nucleic acid 【生化】碱基(核苷酸、核酸中的嘌呤类或嘧啶类) 7 Math. a number in terms of which other numbers or logarithms are expressed (see 见 RADIX 1) 【数】基数，对数的底 8 Archit. the part of a column between the shaft and pedestal or pavement 【建】底座 9 Geom. a line or surface on which a figure is regarded as standing 【几】底边，底面 10 Surveying a known line used as a geometrical base for trigonometry 【测量学】基线 11 Electronics the middle part of a transistor separating the emitter from the collector 【电子学】基极 12 Linguistics a root or stem as the origin of a word or a derivative 【语言学】词根，词基 13 Baseball etc. one of the four stations that must be reached in turn to score a run 【棒球】垒 14 Bot. & Zool. the end at which an organ is attached to the trunk or main part 【植】【动】基部，连接处 15 Heraldry the lowest part of a shield 【纹章学】盾形纹章的最下部 ●v. tr. 1 (usu. foll. by 通常后跟 on, upon) found or establish 把…建立在某种基础之上 a theory based on speculation 建立在推测基础上的理论; his opinion was soundly based 他的看法有充分的根据 2 (foll. by 后跟 at, in, etc.) station 驻扎 troops were based in Malta 部队驻扎在马耳他 □ get to first base esp. N. Amer. slang achieve the first step towards one's objective [尤北美] [俚语]完成了第一步，好的开端 □ off base esp. N. Amer. slang [尤北美] [俚语] 1 mistaken 错的 2 unprepared, unawares 没有准备的，没注意到的 □ touch base (often foll. by 常后跟 with) esp. N. Amer. [尤北美] make (personal) contact 取得(个人)联系 [French base or Latin basis ‘stepping, step, pedestal’, from Greek] |