once
柯林斯词典
1. ADV If something happens once, it happens one time only. 一次[ADV with v]
I met Miquela once, briefly. 我见过蜜凯拉一次,时间很短。
Since that evening I haven't once slept through the night. 自那晚之后,我再也没睡过一次囫囵觉。
2. PRON Once is also a pronoun. 一次['the/this' PRON]
"Have they been to visit you yet?"—"Just the once, yeah."
“他们已经去看过你了吗?”— “来过,就那一次。”
3. ADV You use once with "a" and words like "day," "week," and "month" to indicate that something happens regularly, one time in each day, week, or month. 每隔…一次[ADV 'a' n]
Lung cells die and are replaced about once a week. 肺细胞约每周死亡、更新一次。
4. ADV If something was once true, it was true at some time in the past, but is no longer true. 从前
Her parents once ran a shop. 她父母从前开过一家商店。
I lived there once myself, before I got married. 我从前自己住在那儿,没结婚前。
5. ADV If someone once did something, they did it at some time in the past. 曾经[ADV with v]
I once went camping at Lake Michigan with a friend. 我曾和一个朋友去密执安湖野营。
We once walked across the frozen pond at two in the morning. 我们曾在凌晨2点徒步横穿冰冻的池塘。
6. CONJ If something happens once another thing has happened, it happens immediately afterward. 一…就
The decision had taken about 10 seconds once he'd read a market research study. 他读完一份市场调研报告后,10秒钟就做出了决定。
7. PHRASE If something happens all at once, it happens suddenly, often when you are not expecting it to happen. 突然
All at once there was someone knocking on the door. 突然有人敲门。
8. PHRASE If you do something at once, you do it immediately. 立刻
I have to go at once. 我得马上走。
Remove from the heat, add the parsley, toss and serve at once. 从火上端下来,加入香芹,搅拌后立刻上桌。
9. PHRASE If a number of different things happen at once or all at once, they all happen at the same time. 同时
You can't be doing two things at once. 你不能同时做两件事。
10. PHRASE For once is used to emphasize that something happens on this particular occasion, that it has never happened before, and may never happen again. 就此一次[强调]
For once, Dad is not complaining. 就这一次,爸爸没有抱怨。
11. PHRASE If something happens once again or once more, it happens again. 再一次
Amy picked up the hairbrush and brushed her hair once more. 艾米拿起梳子,又梳了一遍头发。
12. PHRASE If something happens once and for all, it happens completely or finally. 最终地[强调]
We have to resolve this matter once and for all. 我们必须彻底解决这件事情。
13. PHRASE If something happens once in a while, it happens sometimes, but not very often. 偶尔
Your body, like any other machine, needs a full service once in a while. 你的身体就像其他机器一样,偶尔也需要一次全面保养。
14. PHRASE If you have done something once or twice, you have done it a few times, but not very often. 一两次; 几次
I visited once or twice. 我参观过一两次。
Once or twice she had caught a flash of interest in William's eyes. 有一两次,她捕捉到威廉眼中一闪的关注。
返回 once
once /wʌns/
剑桥词典
- I go to aerobics once a week .
- I did meet him once and it was an experience I shall never forget .
- The baby only feeds once a night at the moment , thank goodness .
- If I look flustered it's because I'm trying to do so many things at once.
- She's decided to write her memoirs to set the record straight once and for all.
- Turkey was once an important colonial power .
- England was once a densely wooded country .
- Cancer sufferers no longer face certain death as they once did.
- Shops of this type , once rare , are now numerous .
- An article on this topic would once have been considered off limits .
once adverb (ONE TIME)
one single time一次,一回
I went sailing once, but I didn't like it. 我玩过一次帆船,不过我不喜欢。
We have lunch together once a month . 我们每个月在一起吃一次午餐。
at once
at the same time
同时
They all started talking at once. 他们同时开始讲起话来。
for once
used when something happens that does not usually happen
难得一次
For once, the bus came on time . 难得一次公共汽车准点到达。
just this once
used to say that you will only do or request something on this particular occasion
就这一次,仅此一回
All right , I'll lend you the money - just this once. 好吧,我把钱借给你——仅此一回。
once again (also once more)
again, as has happened before
再次,又一次
Once again, racist attacks are increasing across Europe . 种族主义攻势在整个欧洲又开始抬头。
once more
one more time
再一次
I'd like to visit the campus once more before we leave . 我想在我们离开之前再去参观一下大学。
again, as has happened before
再次,又一次
When my father came home , everything felt right once more. 当父亲回到家时,一切又变好了。
once or twice
a few times
几次,一两次
I've seen him once or twice in town . 我在城里见过他几次。
(every) once in a while
sometimes but not often
偶尔,间或;有时
We meet for lunch once in a while. 我们偶尔见面吃顿午餐。
once and for all
completely and in a way that will finally solve a problem
彻底了结地;一劳永逸地
Our intention is to destroy their offensive capability once and for all. 我们的目的是彻底摧毁他们的进攻能力。
once in a lifetime
only likely to happen once in a person's life
一生只有一次;千载难逢地;难得地
An opportunity as good as this arises once in a lifetime . 像这样好的机会可是千载难逢呀。
也见 once-in-a-lifetime
the once
UK
on a single occasion
一次,一回
I've only played rugby the once, and I never want to play it again. 我只打过一次橄榄球,我再也不想打了。
例句
once adverb (PAST)
in the past, but not now从前,以前;曾经,一度
This house once belonged to my grandfather . 这所房子曾属于我的祖父。
Computers are much cheaper nowadays than they once were. 如今计算机要比以前便宜多了。
Once-thriving villages stand deserted and in ruins . 昔日繁荣的村庄今遭废弃,满目疮痍。
例句