| 单词 | once |
| 释义 | once /wads; WAns/ adv 1 (usu end position) for one time, on one occasion, only: (通常置于句末) 一次： I have been there 我到过那儿一次。 This clock needs winding ~ .a week. 这个时 it 一星期只需要上一次发条。 He goes to see his parents in Wales ~ (in) every six months. 他每六个月去威尔斯看他父母一次。 We go to the cinema ~ a week/a fortnight, every week/every two weeks. 我们每星期(每两星期)去看一次电影。 ~ more, again; another time. 再一次; 再来一次。 ~ or twice; ~ and again; ~ in a while, now and again; occasionally; a few times. 一两次; 一再; 有时; 偶尔。 (for) this ~; (just) for ~, on this one occasion only, as an exception, 只此一次(下不为例)。 ~ (and) for all, → all1 (5). ~ in a blue moon, → blue1. 2 (often mid position) at some indefinite time in the past; formerly: (常置于句子中间)曾经; 从前; 昔时： He ~ lived in Persia. 他从前住在波斯。 This novel was ~ very popular but nobody reads it today. 这本小说曾经一度很受人欢迎，但是现在没有人读它了。 t ~ upon s 'time, (in story-telling style): (讲故事用语)： ~ upon a time there was a giant with two heads. 从前有个两头巨人。 3 (in negative, conditional or indefinite clauses) ever; at all; even for one time: (用于否定子句、条件子句或不定子句中)曾; 全然; 一旦： He didn't ~ offer/He never ~ offered to help. 他徒没有提供过帮助。~ (= If you ~, As soon as) you understand this rule, you yvill have no further difficulty. 你一旦了解这商规则，就不会再有困难。 4 at ~, a without delay; immediately: 立刻; 马上： I'm leaving for Rome at ~. 我马上就去罗马。 Come here at ~! 立刻到这儿来！ b at the same time: 同时： Don't all speak at ~! 不要全体同时说！ I can't do two things at ~. 我不能同时做两杵事。 The book is at ~ interesting and instructive. 这本书既有趣又有益。 all at ~, suddenly; 突然 All at ~ I saw a rabbit dart across the road. 突然间我看到一只兔子急速越过道路。 get/give sb/sth the ~-over, (colloq) get/ give sb/sth a rapid inspection or examination. (俗)被谨速检査一遍; 将某人(某物)迅速检査一遍。 |
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