详细解释
旦
1、(指事。甲骨文字形,象太阳从地面刚刚升起的样子。本义:天亮,破晓,夜刚尽日初出时)。
2、同本义。
女曰:“鸡鸣”,士曰:“昧旦”。---《诗·郑风·女曰鸡鸣》
夜穿墉以视之,达旦忘反。---《世说新语·贤媛》
夫犬马,人所知也,旦暮罄于前,不可类之,故难。---《韩非子·外储说左上》
旦而战,见星未已。---《左传·成公十六年》
号呼达旦。---清·方苞《狱中杂记》
旦辞爷娘去,暮宿黄河边。---《乐府诗集·木兰诗》
旦日：天亮时
旦明：天亮时。
3、早晨。
旦夕得甘毳以养亲。---《史记·刺客列传》
旦夕之危：比喻非常迫促的危险
旦气：清晨的空气
旦晚：早晚。
4、天,日;某日。
人有卖骏马者,比三旦立市,人莫之知。---《战国策·燕策》
一旦：一天之间
元旦：新年的第一天
旦昏：白天与夜晚
旦昼：第二天的白天
旦朝：次日清早。
5、旦角,传统戏剧中的女演员或女性角色类型。女主角称正旦,又有副旦、贴旦、外旦、小旦、大旦、老旦、花旦、色旦、搽旦等。
例句
一旦火鸡解冻，立刻移除鸡杂。
Once the turkey has defrosted, remove the giblets.
火一旦熄灭，抢救队就会进去。
Once the fire has died out, the salvage team will move in.
一旦我到了迈阿密就能找到工作。
Once I'm in Miami I can get a job.
你一旦掌握这个技能就容易了。
It's easy, once you've got the knack.
一旦决定了，事情很快顺理成章。
Once the decision was made, things fell into place rapidly.
逃跑一旦被侦察到，就会触发警报。
Any escape, once it's detected, sets off the alarm.
一旦适应了，我就非常喜欢上学了。
I enjoyed school enormously once I'd settled in.
脑细胞一旦遭到破坏，就不能再生。
Once destroyed, brain cells do not regenerate.
你一旦了解了她就会喜欢她的。
You'll like her once you get to know her.
一旦他发现了真相，那麻烦就大了。
There'll be hell to pay when he finds out.
一旦她懂了行，她就一往无前了。
The moment she got to know the ropes, there was no stopping her.
一旦就业，即停发福利救济。
Welfare payments cease as soon as an individual starts a job.
你一旦下了水，就会觉得水里挺舒适。
The water is fine once you're in!
事情一旦败露，我就不想待在这儿了。
When the shit hits the fan, I don't want to be here.
一旦让她父亲发现了，就会发生争吵。
There'll be ructions if her father ever finds out.
一旦杂质沉淀下去，油就可以定级了。
Once its impurities had settled, the oil could be graded.
他一旦故去，所有财产都由希拉继承。
Sheila will inherit everything in the event of his death.
他们一旦遭遇警察就毫不犹豫地开火。
They don't hesitate to open fire when confronted by police.
一旦受伤，你便会让身体其他部位受力。
When you have an injury you start putting stress on other parts of your body.
一旦你停止动脑筋,你很快就会变迟钝。
Once you stop using your brain you soon go stale.
牙刷毛一旦磨损就扔掉。
As soon as the bristles on your toothbrush begin to wear, throw it out.
一旦置入，它们就会使电子安全设施短路。
Once inside they short-circuited the electronic security.
一旦蔬菜开始加热烹调，就加入几汤匙水。
Once the vegetables start to cook add in a couple of tablespoons of water.
你一旦核对了所定货物，就把该记录存档。
Once you've checked off the items you ordered, put this record in your file.
大多数电线一旦弯曲变形就恢复不了原状。
Once most wires are bent out of shape, they don't return to the original position.
一旦您选定了养狗场，请为您的宠物预约。
Once you have chosen a kennel, make a booking for your pet.
一旦钱花光了，我们就不知道该怎么办了。
We didn't know how we would cope once the money had gone.
最后这批口粮一旦用完，国家又要面临饥荒。
Once these latest rations run out, the country will again face hunger and starvation.
他们一旦接受了某个想法，就永远不会放弃。
Once they get an idea into their heads, they never give up.
我不希望一旦我暂时离开，这份工作就不保。
I'd hate to think my job would not be secure if I left it temporarily.
相关成语
- bǐng zhú dài dàn秉烛待旦
- mèi dàn chún xīng昧旦晨兴
- dàn rì rì xī旦日日夕
- lián xiāo dá dàn连宵达旦
- dàn zhòng mù chéng旦种暮成
- zhěn gē dá dàn枕戈达旦
- zuò yǐ dài dàn坐以待旦
- zhǐ zhēng dàn xī只争旦夕
- yī dàn yī xī一旦一夕
- dàn mù rù dì旦暮入地
- pìn jī sī dàn牝鸡司旦
- tōng xiāo chè dàn通宵彻旦
- shēn dàn dá xī申旦达夕
- sù xīng mèi dàn夙兴昧旦
- jī míng jiè dàn鸡鸣戒旦
- wáng zài dàn xī亡在旦夕
- mèi dàn pī xiǎn昧旦丕显
- zhěn gē dài dàn枕戈待旦
- tōng xiāo dá dàn通宵达旦
- dàn dàn xìn shì旦旦信誓