once

onceonceD.J.:[wʌns]K.K.:[wʌns]adv.1.■一次I have been there once.我到过那儿一次。2.■曾经, 昔时I once went around the world.过去我周游过全球。conj.1.■一旦…就…Once you begin, you must continue.一旦开了头, 你就应当继续下去。n.1.■〈口〉一次, 一回She's only done it the once, so don't be too angry.她只做过这一次, 不要太生气。

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once[wʌns]adv.1.■曾经，一度2.■从前3.■一次，一回4.■[用于否定句、条件句等]一旦5.■(亲属关系上)上一辈，隔一代6.■乘以一7.■[用于否定句]完全；一次地8.■[方言]立即，马上9.■[古语]将来总有一天adj.1.■从前的；一度的n.1.■一次，一回conj.1.■一…(就)…，一旦…(就…)：Once you're finished, go home.干完活儿，你就回家吧。all at once同时，一起突然，忽然，出乎意料地at once立刻，马上at once … and既…又…every once in a way有时，偶尔every once in a while偶尔，间或for once in a way偶尔，间或，破例地for this (或 that) once (或 for once)就这(或那)一次；破例一次just for once= for this (或 that) oncemore than once不止一次，多次not once一次也不，从不once again再一次once and again有时，偶尔一再，再三，屡次once and away= for once in a way= once (and) for allonce (and) for all一劳永逸地，一次了结；永远地，彻底地once bit (或 bitten), twice shy.见 biteonce in a blue moon极为罕见once in a way= for once in a wayonce in (或 and) a while= every once in a whileonce more再一次once or twice一两次，几次once that一旦…(就…)once too often又一次(指超过限度而发生问题)；多次幸免此次遭殃；多次成功此次受挫once upon a time见 timeto once[方言]立刻，马上

onceonce[wʌns]adv.1.■一次2.■曾经; 从前3.■一旦; 一度4.■[用于否定句]一次也(不); 完全(不)5.■乘以一; (亲属间行辈上)小一辈; (程度上)相差无几once a year一年一次a once powerful nation曾很强盛的国家a cousin once removed堂[表]兄弟[姊妹]的孩子If the facts once become known, he will be punished.事实一旦公开, 他就要受到惩罚。I couldn't once understand what he meant.我完全不懂他的意思。Once one is one.一一得一。

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词性变化onceconj.1.■一旦, 每当Once you begin you must continue.你一旦开始, 便不可停下来。n.1.■一次, 一回Once is enough for me.对我来说一次就够了。adj.1.■从前的a once friend从前的一个朋友

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继承用法once-forbiddenadj.1.■一次禁戒的once-throughn.1.■强制循环