| 单词 | once |
| 释义 | once[wʌns]ad. 一次, 曾经, 一旦conj. 一旦, 一经n. 一次a. 从前的相关词组:once or twicenot onceall at onceat onceat once...and...more than onceonce moreonce and againonce and awayonce and for allonce in a wayonce in a whileonce too oftenjust for onceonce upon a timeonce a week once once AHD: [w¾ns] D.J. [wJns]K.K. [wJns]adv.（副词）1. One time only:仅仅一次：once a day.一天一次2. At one time in the past; formerly.过去的某一时间；以前3. At any time; ever:从前；曾经：Once known, his face is never forgotten.曾经认识，他的面容让人永生难忘4. By one degree of relationship:关系相隔一代的：my first cousin once removed.我堂亲的孩子n.（名词）A single occurrence; one time:发生一次；一次：Once will have to do. You can go just this once.必须去做一次，你只去这一回conj.（连接词）As soon as; if ever; when:一…就；一旦；当…时：Once he goes, we can clean up.他一走，我们就能清理adj.（形容词）Having been formerly; former:曾经的；以前的：the once capital of the nation.该国以前的首都习惯用语:at once 1. All at one time; simultaneously:立刻；同时：Everything happened at once. The view of the skyline is at once awesome, grand, and disappointing.所有的事都一起发生了。天边立刻呈现出令人敬畏的、壮丽的和令人沮丧的景色2. Immediately; instantly:立即；马上：Leave the room at once.马上离开这个房间语源:1. Middle English ones 中古英语 ones 2. from on [one] 源自 on [一] 3. from Old English ³n * see oi-no- 源自 古英语 ³n *参见 oi-no- |
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