I have to be sharp and clever, lest I go hungry.

我得机智灵，要不然就挨饿。

Why do you think I have one of these?

要不然我为什么带个橡皮呢？

And you're stuck? Why else would a person try to engage their superior colliculus?

你卡壳了 要不然怎么会有人想要激上丘脑？

We say that everything is rather terrible and everyone is rather awful.

我们指的是每件事情都会相当的悲惨，要不然就是每个人都会相当的阴险。

This could eventually lead to neck pain.

要不然可能会造成颈部疼痛。

We should get to work, or we won't be finished by dinnertime.

我们得开始做事了, 要不然晚餐时间到了我们还没做完。

I have to turn off the lights, or else my father will get really angry.

我得关掉灯，要不然我爸爸会气。

My body is gonna regret that in the morning.

要不然我明天早上会痛不欲。

Okay, quick quick, roll the credits before I die.

不要废话了，快点把致谢名啦，要不然我要身亡了。

Someone take this from me. My body is gonna regret that in the morning.

来人啊，谁快点来阻止我继续喝，要不然我明天早上会痛不欲。

Let's hope it doesn't happen to this programme, otherwise we might become Three Minute English!

希望那不会发在这个节目中，要不然我们节目可能会变成三分钟英语！

Fine. Let's go, but don't run. It's hard to follow you.

好，我们吧。不过你别跑，要不然我就跟不上你了。

Hurry up or we can't catch the last bus.

快点, 要不然我们就赶不上最后班车了.

Otherwise, we'll end up in juvenile court.

要不然，我们就要被告上少年法庭了。

W'd better be going now, or we'll be late for the train.

我们最好现在就要了，要不然会赶不上火车的。

Well, I didn't want to say anything until I were sure she could come.

好吧，直到确定她会来，要不然我不想说任何关于这个事情。

Why do not you come in and fill out an application?

你要不然过来填写申请表？

Otherwise everyone would have wanted it to go to a finish.

要不然人人都会要求比赛到底的。

'Quick, tell me or it may be too late! ' said Mrs Corney greedily.

“快说，要不然来不及了！”科尼太太贪婪地说。

Reverse your sweater or you will put it on wrong side out.

把你的羊毛衣翻过来，要不然你就穿反了。