| 释义 |
🔑onceonce1 /wʌns / adverb - one time only; on one occasion一次；一回◆I've only been to Mexico once.我只去过墨西哥一次。◆once a week / month / year每周／每月／每年一次◆I have the car serviced once every six months.每隔六个月我给这辆车做一次保养。
- at some time in the past; formerly曾经；一度；从前◆This house was once the general store.这栋房子曾经是个杂货店。
 ●all at once- suddenly突然◆All at once she got up and left the room.她突然起身离开了房间。
- all together; at the same time一起；同时◆People began talking all at once.人们不约而同地开始说起话来。
●at once- (formal) immediately; without delay立即；马上◆Come here at once!马上到这儿来！
- at the same time同时◆I can't understand anything if you all talk at once.你们要是同时都说，我就没法听懂。
●just this onceon this occasion only就这一次；只此一次◆“Have a glass of wine.” “Oh, all right. Just this once.”“喝杯酒吧。”“哦，好吧。仅此一次。”●once againagain, as before再次；又一次◆Spring will soon be here once again.春天很快又会再次到来。●once and for allnow and for the last time一次了结；最后一次◆You've got to make a decision once and for all.你必须做出最后的决定。●once in a blue moon (informal) very rarely; almost never极罕见；几乎从不◆We live in Amarillo, so I only go to Dallas once in a blue moon.我们住在阿马里洛，所以我极少去达拉斯。●(every) once in a whileoccasionally, but not often偶尔；有时◆We like to order Chinese food every once in a while.我们偶尔喜欢点中餐。●once more- one more time再一次；又一次◆All right. We'll read the story once more, but then it's time for bed.好吧，我们再读一遍故事，不过之后就得睡觉了。
- again, as before再次；又一次◆The valuable painting is once more in the hands of its rightful owner.那幅珍贵的画又回到了其合法的主人手中。
●once upon a time(used at the beginning of a children's story) a long time ago; in the past（用于童话故事的开头）很久以前，从前◆Once upon a time, there was a beautiful princess…很久很久以前，有一个美丽的公主…
🔑onceonce2 /wʌns / conjunction as soon as; when一…就；一旦；当…时◆Once you've practiced a little, you'll find that it's fairly easy.你一旦稍加练习，就会发现这挺容易的。◆Once the meal was finished, the discussions began.大家一吃完饭便开始讨论。 |