unless

We cannot understand disease unless we understand the person who has the disease.

若不了解患者我们就不能了解疾病。

Training is worthless unless there is proof that it works.

除非能证明训练有效，否则就是白搭。

You can initiate policies until the cows come home, but unless they're monitored at a senior level, you won't get results.

你可以花很长时间来制定政策，但除非高层对之进行监管，否则不会有效果。

Avoid changing a nappy unless it's dirty or very wet.

除非尿布脏了或非常湿，否则别换。

How can you expect to win confidence of the people unless you come to them with clean hands.

你如何能赢得人民的信任,除非你以廉洁之身和他们打交道.

There's no use in manufacturing an item unless you can merchandise it.

除非能够销售得出,否则生产产品就没有价值.

I shall go unless it rains.

如果不下雨我就去.

Substances have no tendency to expand unless ( they are ) heated.

除非 受热,物质不会有膨胀的倾向.

There's no snake known that will habitually attack human beings unless threatened with its life.

除非自己的生命受到了威胁，已知的蛇中还没有习惯性地攻击人类的。

All bitches should be spayed unless being used for breeding.

除非是用作种犬，所有的母犬都应摘除卵巢。

They refused to negotiate unless three preliminary requirements were met.

如果三项先决条件得不到满足,他们就拒绝谈判.

That's the plan—unless anything untoward happens.

计划就这么定了—除非出现异常情况。

He resolutely refused to speak English unless forced to.

除非迫不得已，否则他坚决不说英语。

Leave your cheque book and credit cards at home unless you know you will need them.

除非确实需要用到支票簿和信用卡，否则别带在身上。

They face certain death unless they can be rescued today.

他们除非今天获救,否则必死无疑.

There's an excellent probability that unless action is quickly taken, pipes will freeze.

除非立即采取行动，否则管道很有可能冻住。

No one could emerge from that avalanche alive, unless one believed that man could rise from the dead.

没人能从那次雪崩中活着出来, 除非相信人能死而复生.

Don't come unless I ring you up.

除非我打电话给你,否则你不要来.

His kidnappers have threatened that they will kill him unless three militants are released from prison.

绑架他的绑匪威胁说，如果不释放3名激进分子他们就杀了他。

You'll never get anywhere in your job unless you reach up to the highest position in the firm and take steps to fulfill your aim.

除非你在公司里有望得到最高的地位并采取步骤来实现你的目标,否则你在工作中永远一事无成.

We will not attack unless we are attacked; if we are attacked, we will certainly counterattack.

人不犯我,我不犯人; 人若犯我, 我必犯人.

You're not going to get out of here unless we make a deal.

除非我们达成协议，否则你就别想从这儿出去。

They wouldn't ask for help unless it were a matter of life and death.

除非是生死攸关的事情,否则他们不会请求别人帮助.

The colour will not be evenly fixed unless the cloth is first properly wetted out.

如果不把布用水浸透,那么就不会均匀地着色.

Iron corrodes unless it is greased or kept clean.

如果不涂油或保持清洁铁便会腐蚀.

You can't appreciate English poetry unless you understand its rhythm.

你若不懂英文诗韵律,就无法欣赏英文诗.

Unless she loses some weight, she's had it.

除非她减点儿肥，否则她就没戏了。

Unless paying by credit card, please pay in cash.

如果不用信用卡付账, 就请付现金.

Unless you're ill, there's no reason why you can't get those 15 minutes of walking in daily.

除非你病了，否则你没有理由每天连走15分钟都做不到的。