| 释义 |
once AHD[wŭns] D.J.[wʌns]K.K.[wʌns]adv.（副词）- One time only:仅仅一次：once a day.一天一次
- At one time in the past; formerly.过去的某一时间；以前
- 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
- 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
at once - 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
- Immediately; instantly:立即；马上：Leave the room at once.马上离开这个房间
- Middle English ones 中古英语 ones
- from on [one] 源自 on [一]
- from Old English ān * see oi-no- 源自 古英语 ān * 参见 oi-no-
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