应该先定下条件，否则全是空谈。

Conditions should be laid down. Otherwise it's all talk.

不要开始给我找麻烦，否则我就不客气了。

Don't start giving me problems otherwise I'll have to be very unpleasant indeed.

我们最好快点，否则就赶不上火车了。

We'd better hurry or we'll miss the train.

除非发生奇迹，否则我们输定了。

Short of a miracle, we're certain to lose.

除非我死了，否则她别想搬进我们家。

She moves into our home over my dead body.

木头不能受潮，否则很快就会烂掉。

The wood must not get damp as rot can quickly result.

除非某些条件得到满足，否则他们不会释放人质。

They refused to release their hostages unless certain conditions were met.

除非票上另有注明，否则可携带行李为20公斤。

You are allowed 20kgs of baggage unless indicated otherwise on your ticket.

贵重物品需看管，否则风险自负。

Valuables are left at their owner's risk.

我不能晚了，否则爸爸会发脾气的。

I mustn't be late or Dad will go up the wall.

我可不能戴那个东西！否则会成为笑柄的。

I can't wear that! I'd be a laughing stock.

这些数据不应孤立起来看，否则就没有意义。

To make sense, these figures should not be looked at in isolation.

不要希望过高，否则你可能会失望的。

Don't raise your hopes too high, or you may be disappointed.