once 的英语意思
onceonce1 /wʌns/ adverb 
查看全部语言翻译1on one occasion only仅一次: 
I’ve only met her once.我只见过她一次。 Paul’s been to Wexford once before.Paul以前去过Wexford一次。(just) the once British English spoken口语 Mrs Peterson came in to see Ruth just the once.Peterson太太来看Ruth，就只那一次。2once a week/once every three months etc one time every week etc, as a regular activity or event每周等固定一次，作为定期活动或事件: Staff meetings take place once a week.员工会议每周举行一次。 They took separate holidays at least once every two years.他们至少每两年分别度一次假。3at some time in the past, but not now曾经，在过去某一时期，但现在不再如此: Sonya and Ida had once been close friends.Sonya和Ida曾经是亲密的朋友。 She and her husband had once owned a house like this.她和丈夫曾经拥有过一栋这样的房子。once-great/proud etc It was sad to see the once-great man looking so frail.看到这位昔日伟大的人如今如此虚弱，令人心酸。 the once-mighty steel industry曾经强盛的钢铁工业4in the past, at a time that is not stated在过去，在未指明的某一时间: I once ran 21 miles.我曾经跑过21英里。 Marx once described religion as the ‘opium of the people’.马克思曾将宗教描述为"人民的鸦片"。5at once a)immediately or without delay立即，毫不拖延: Now, go upstairs at once and clean your room!现在马上上楼去打扫你的房间！ When I saw him I recognized him at once.我一见到他就认出了他。 b)together, at the same time一起，同时: I can’t do two things at once!我无法同时做两件事！ Don’t all talk at once.不要同时都开口说话。Register语体In everyday English, when people mean 'immediately', they usually say right away or, in British English, straight away rather than at once:· I recognized him right away.在日常英语中，表示"立即"时，人们通常说right away，英式英语则说straight away，而非at once：· I recognized him right away.（我立刻认出了他。）6once more/once again a)again, after happening several times before再次，在此前已发生过数次之后: I looked at myself in the mirror once more.我又看了一眼镜子里的自己。 Once again she’s refusing to help.她又一次拒绝帮忙。 b)used to say that a situation changes back to its previous state用于表示情况恢复到先前的状态: The crowds had all gone home and the street was quiet once more.人群都已回家，街道重归宁静。 c)formal正式 used before you repeat something that you said before用于重申之前说过的话之前: Once again, it must be stressed that the pilot was not to blame.再次强调，飞行员没有责任。7all at once a)if something happens all at once, it happens suddenly when you are not expecting itall at once表示某事在你毫无预料之时突然发生: All at once there was a loud banging on the door.突然，门上传来一阵猛烈的敲击声。 b)together, at the same time一起，同时: A lot of practical details needed to be attended to all at once.许多实际的细节需要同时处理。8(every) once in a while sometimes, although not often有时，尽管不常发生: I do get a little anxious once in a while.我偶尔也会有点焦虑。 I saw her in the shop every once in a while.我时不时地在店里碰到她。9never once/not once used to emphasize that something has never happened用于强调某事从未发生过: I never once saw him get angry or upset.我从未见过他发怒或沮丧。 Not once did they finish a job properly.他们从来没有把一件事情做好过。10(just) for once used to say that something unusual happens, especially when you wish it would happen more often用于说某件不寻常的事发生了，尤其是当你希望它更常发生时: Be honest for once.就这一次，说实话吧。 Just for once, let me make my own decision.就这一次，让我自己做决定。 For once Colin was speechless.这一次，Colin竟然无话可说。11once and for all a)if you deal with something once and for all, you deal with it completely and finallyonce and for all处理某事，指彻底、最终地解决它: Let’s settle this matter once and for all.让我们彻底解决这件事。 b)British English spoken口语 used to emphasize your impatience when you ask or say something that you have asked or said many times before用于强调不耐烦，当你提出或说出之前已多次提出或说过的话时: Once and for all, will you switch off that television!说最后一次，你能不能把那台电视关掉！12once or twice a few times几次: I wrote to him once or twice, but he didn’t answer.我给他写过一两次信，但他没有回复。13(just) this once spoken口语 used to emphasize that this is the only time you are allowing something, asking for something etc, and it will not happen again用于强调这是唯一一次允许某事、请求某事等，不会再有下一次: Go on, lend me the car, just this once.来嘛，就这一次，把车借给我吧。 I’ll make an exception this once.就这一次，我破例吧。14once upon a time a)spoken口语 at a time in the past that you think was much better than now在过去某个你认为比现在好得多的时代: Once upon a time you used to be able to leave your front door unlocked.从前，人们可以不锁前门出行。 b)a long time ago – used at the beginning of children’s stories很久很久以前——用于儿童故事的开头15once in a blue moon informal非正式 very rarely极少，非常罕见: It only happens like this once in a blue moon.这种情况极少发生。16do something once too often to repeat a bad, stupid, or dangerous action with the result that you get punished or cause trouble for yourself屡次重复糟糕、愚蠢或危险的行为，结果受到惩罚或给自己带来麻烦: He tried that trick once too often and in the end they caught him.他那个把戏玩得太多了，最终被抓了。17once a ..., always a ... spoken口语 used to say that people stay the same and cannot change the way they behave and think用于表示人们本性难改，无法改变自己的行为方式和思维方式: Once a thief, always a thief.一旦为贼，终究是贼。18once is/was enough spoken口语 used to say that after you have done something one time you do not need or want to do it again用于表示某事做过一次之后就不再需要或不想再做了19once bitten, twice shy used to say that people will not do something again if it has been a bad experience用于表示如果某件事是一次糟糕的经历，人们便不会再去做了
查看全部语言翻译1on one occasion only仅一次: I’ve only met her once.我只见过她一次。 Paul’s been to Wexford once before.Paul以前去过Wexford一次。(just) the once British English spoken口语 Mrs Peterson came in to see Ruth just the once.Peterson太太来看Ruth，就只那一次。2once a week/once every three months etc one time every week etc, as a regular activity or event每周等固定一次，作为定期活动或事件: Staff meetings take place once a week.员工会议每周举行一次。 They took separate holidays at least once every two years.他们至少每两年分别度一次假。3at some time in the past, but not now曾经，在过去某一时期，但现在不再如此: Sonya and Ida had once been close friends.Sonya和Ida曾经是亲密的朋友。 She and her husband had once owned a house like this.她和丈夫曾经拥有过一栋这样的房子。once-great/proud etc It was sad to see the once-great man looking so frail.看到这位昔日伟大的人如今如此虚弱，令人心酸。 the once-mighty steel industry曾经强盛的钢铁工业4in the past, at a time that is not stated在过去，在未指明的某一时间: I once ran 21 miles.我曾经跑过21英里。 Marx once described religion as the ‘opium of the people’.马克思曾将宗教描述为"人民的鸦片"。5at once a)immediately or without delay立即，毫不拖延: Now, go upstairs at once and clean your room!现在马上上楼去打扫你的房间！ When I saw him I recognized him at once.我一见到他就认出了他。 b)together, at the same time一起，同时: I can’t do two things at once!我无法同时做两件事！ Don’t all talk at once.不要同时都开口说话。Register语体In everyday English, when people mean 'immediately', they usually say right away or, in British English, straight away rather than at once:· I recognized him right away.在日常英语中，表示"立即"时，人们通常说right away，英式英语则说straight away，而非at once：· I recognized him right away.（我立刻认出了他。）6once more/once again a)again, after happening several times before再次，在此前已发生过数次之后: I looked at myself in the mirror once more.我又看了一眼镜子里的自己。 Once again she’s refusing to help.她又一次拒绝帮忙。 b)used to say that a situation changes back to its previous state用于表示情况恢复到先前的状态: The crowds had all gone home and the street was quiet once more.人群都已回家，街道重归宁静。 c)formal正式 used before you repeat something that you said before用于重申之前说过的话之前: Once again, it must be stressed that the pilot was not to blame.再次强调，飞行员没有责任。7all at once a)if something happens all at once, it happens suddenly when you are not expecting itall at once表示某事在你毫无预料之时突然发生: All at once there was a loud banging on the door.突然，门上传来一阵猛烈的敲击声。 b)together, at the same time一起，同时: A lot of practical details needed to be attended to all at once.许多实际的细节需要同时处理。8(every) once in a while sometimes, although not often有时，尽管不常发生: I do get a little anxious once in a while.我偶尔也会有点焦虑。 I saw her in the shop every once in a while.我时不时地在店里碰到她。9never once/not once used to emphasize that something has never happened用于强调某事从未发生过: I never once saw him get angry or upset.我从未见过他发怒或沮丧。 Not once did they finish a job properly.他们从来没有把一件事情做好过。10(just) for once used to say that something unusual happens, especially when you wish it would happen more often用于说某件不寻常的事发生了，尤其是当你希望它更常发生时: Be honest for once.就这一次，说实话吧。 Just for once, let me make my own decision.就这一次，让我自己做决定。 For once Colin was speechless.这一次，Colin竟然无话可说。11once and for all a)if you deal with something once and for all, you deal with it completely and finallyonce and for all处理某事，指彻底、最终地解决它: Let’s settle this matter once and for all.让我们彻底解决这件事。 b)British English spoken口语 used to emphasize your impatience when you ask or say something that you have asked or said many times before用于强调不耐烦，当你提出或说出之前已多次提出或说过的话时: Once and for all, will you switch off that television!说最后一次，你能不能把那台电视关掉！12once or twice a few times几次: I wrote to him once or twice, but he didn’t answer.我给他写过一两次信，但他没有回复。13(just) this once spoken口语 used to emphasize that this is the only time you are allowing something, asking for something etc, and it will not happen again用于强调这是唯一一次允许某事、请求某事等，不会再有下一次: Go on, lend me the car, just this once.来嘛，就这一次，把车借给我吧。 I’ll make an exception this once.就这一次，我破例吧。14once upon a time a)spoken口语 at a time in the past that you think was much better than now在过去某个你认为比现在好得多的时代: Once upon a time you used to be able to leave your front door unlocked.从前，人们可以不锁前门出行。 b)a long time ago – used at the beginning of children’s stories很久很久以前——用于儿童故事的开头15once in a blue moon informal非正式 very rarely极少，非常罕见: It only happens like this once in a blue moon.这种情况极少发生。16do something once too often to repeat a bad, stupid, or dangerous action with the result that you get punished or cause trouble for yourself屡次重复糟糕、愚蠢或危险的行为，结果受到惩罚或给自己带来麻烦: He tried that trick once too often and in the end they caught him.他那个把戏玩得太多了，最终被抓了。17once a ..., always a ... spoken口语 used to say that people stay the same and cannot change the way they behave and think用于表示人们本性难改，无法改变自己的行为方式和思维方式: Once a thief, always a thief.一旦为贼，终究是贼。18once is/was enough spoken口语 used to say that after you have done something one time you do not need or want to do it again用于表示某事做过一次之后就不再需要或不想再做了19once bitten, twice shy used to say that people will not do something again if it has been a bad experience用于表示如果某件事是一次糟糕的经历，人们便不会再去做了