once
US
UK once adv: (a single time)
SC 一次 yí cì
TC 一次
TC 一次
I have only tried coffee once because I hated it!
我只喝过一次咖啡，因为我很不喜欢！
once adv: (formerly)
SC 曾
TC 曾
TC 曾
SC 曾经 céng jīng
TC 曾經
TC 曾經
I once knew how to sew.
我曾经会缝纫。
once conj: (if ever)
SC 一旦 yí dàn
TC 一旦
TC 一旦
Once you try Thai food you will want more.
你一旦尝过泰国菜后，就会欲罢不能。
once conj: (after, when)
SC 当...的时候 dāng de shí hòu
SC 在…以后 dāng de shí hòu，zài … yǐ hòu
TC 在...以後
TC 在...以後
You can pay for it once you get here.
你可以到了这里后再付款。
once n: (a single time)
SC 一次 yí cì
TC 一次
TC 一次
Once is enough for me. I have no interest in doing it again.
对我来说，一次就足够了。我没有兴趣再做一次。
once adj: (former)
SC 以前的 yǐ qián de
SC 从前的 yǐ qián de ，cóng qián de
TC 從前的
TC 從前的
SC 曾经的 yǐ qián de ，céng jīng de
TC 曾經的
TC 曾經的
The once happily married man got a divorce.
曾经那个婚姻美满幸福的男子离婚了。
once adv: (when, at the time)
SC 到...的时候 dào de shí hòu
Once the evidence becomes public, there will be an outcry.
证据一旦公开，到那个时候，肯定会激起民愤的。
all at once adv: (suddenly)
SC 忽然 hū rán
TC 忽然
TC 忽然
SC 突然 hū rán，tū rán
TC 突然
TC 突然
All at once, I heard a noise in the kitchen.
all at once adv: (simultaneously, at the same time)
SC 同时 tóng shí
TC 同時
TC 同時
The guests cried "Surprise!" all at once.
at once adv: (immediately)
SC 立刻，马上，立马 lì kè，mǎ shàng
TC 立刻，馬上
TC 立刻，馬上
When Beth saw how ill her son was, she called the health centre at once.
看到儿子病重，贝丝立马给健康中心打了电话。
at once adv: (at one time: simultaneously)
SC 同时 tóng shí
TC 同時
TC 同時
I can't clean the house and take care of the children at once.
我没法同时又看孩子、又打扫房子。
every once in a while expr: (occasionally)
SC 每隔一段时间
SC 偶尔 ǒu ěr
TC 偶爾
TC 偶爾
SC 有时 yǒu shí
TC 有時
TC 有時
Every once in a while, Paula goes to the gym.
for once adv: (for a change, for the first time)
SC 就这一次 jiù zhè yí cì
TC 就這一次
TC 就這一次
SC 仅此一次 jiù zhè yí cì，jǐn cǐ yí cì
TC 僅此一次
TC 僅此一次
SC 只有一次 jiù zhè yí cì，zhǐ yǒu yí cì
Maybe I should do my work a little at a time for once, instead of putting it off.
just once adv: informal (one time only)
SC 仅此一次 jǐn cǐ yí cì
TC 僅此一次
TC 僅此一次
SC 只有一次 jǐn cǐ yí cì，zhǐ yǒu yí cì
Just once, I wish you would ask politely.
I'll make an exception just once.
once a week adv: (on a weekly basis)
SC 每周一次 měi zhōu yí cì
Our bins are collected once a week.
once again adv: (one more time, as an encore)
SC 又一次 yòu yí cì
SC 再一次 yòu yí cì，zài yí cì
Everyone clapped and the band came back to play once again.
所有人都鼓起掌，然后乐队返台又表演了一次。
once again adv: (yet again)
SC 再 zài
TC 再
TC 再
SC 再次，再一次 zài cì，zài yí cì
TC 再次
TC 再次
SC 再度 zài，zài dù
TC 再度
TC 再度
He has failed the exam once again. Once again, my son forgot to make his bed.
再一次，他没能通过考试。
我儿子再度忘记整理床铺。
once and again expr: US (repeatedly)
SC 一而再
SC 再三 zài sān
TC 再三
TC 再三
once and for all adv: (for the final time)
SC 一次了结地 yí cì liǎo jié de
SC 彻底地 yí cì liǎo jié de，chè dǐ de
TC 徹底地
TC 徹底地
You said yes, then you said no. Tell me once and for all, will you marry me?
once before adv: (on one previous occasion)
SC 曾经，有一次 céng jīng，yǒu yí cì
TC 曾經
TC 曾經
once in a blue moon adv: figurative (very rarely)
SC 千载难逢地
SC 极为罕见地
He only calls once in a blue moon.
once in a lifetime adv: (extremely rarely) (机遇等)
SC 一生一次，千载难逢
TC 千載難逢
TC 千載難逢
A chance like this only comes along once in a lifetime.
once in a while adv: (occasionally)
SC 偶尔 ǒu ěr
TC 偶爾
TC 偶爾
SC 时而 ǒu ěr，shí ér
TC 時而
TC 時而
SC 有时 ǒu ěr，yǒu shí
TC 有時
TC 有時
I hear from old school friends once in a while.
我有时还能收到老同学的来信。
once more adv: (yet again)
SC 再 zài
TC 再
TC 再
SC 又 zài，yòu
TC 又
TC 又
Once more you have failed to get your essay in on time.
once more adv: (one more time)
SC 再一次 zài yí cì
SC 又一次 zài yí cì，yòu yí cì
Can you please show me once more how it works?
once or twice expr: (a couple of times, a few times)
SC 几次 jǐ cì
SC 一两次
once removed adj: (relative: one generation older) (年长一辈的亲戚)
SC 远房的，隔代的 yuǎn fáng de
My father's first cousin is my first cousin once removed.
once removed adj: (relative: one generation younger) (年轻一辈的亲戚)
SC 远房的，隔代的 yuǎn fáng de
My first cousin's daughter is my first cousin once removed.
once upon a time adv: (start of a fairy tale)
SC 很久以前 hěn jiǔ yǐ qián
Once upon a time, in a land far away, there lived an orphan girl with her wicked stepmother.
很久以前，在一片遥远的国度，住着一位没有爸爸妈妈的女孩和她邪恶的继母。
once-in-a-lifetime adj: (opportunity: very rare) (机遇等)
SC 一生一次的，千载难逢的
The brothers thought the trip around the world was a once-in-a-lifetime opportunity.
give [sb/sth] the once-over, give [sb/sth] a once-over v expr: informal (inspect quickly) (非正式用语)
SC 草草打量，粗略查看
When I submitted my report to the CEO, he gave it the once-over and then gave me a thumbs up.
give [sth] the once-over, give [sth] a once-over v expr: informal (clean [sth] quickly) (非正式用语)
SC 迅速清洁
TC 迅速清潔
TC 迅速清潔
SC 迅速打扫
I had just finished giving the living room a once-over when the guests arrived.
only once adv: (on one occasion only)
SC 只有一次 zhǐ yǒu yí cì
I've been to Paris only once but would like to return some day.
only once adv: (a single time without repetition)
SC 只一次 zhǐ yí cì
SC 仅一次 zhǐ yí cì，jǐn yí cì
Press the "enter key" only once.
too much at once n: (sudden excess of [sth])
SC 突然过量 tū rán guò liàng
TC 突然過量
TC 突然過量
I took a big gulp of beer and got too much at once.