Well, make sure to put out the pepper and salt shakers. I don’t know if your brother is coming tonight so set an extra place mat just in case.

额，放上胡椒粉和盐瓶。不知道你哥哥今晚会不会来，以防万一，多副碗筷。

What if you're wrong? What if I'm what's real?

万一是你错了呢 万一我才是真实的呢？

" Jus'a precaution, " said Hagrid, shrugging his massive shoulders.

“只是为了以防万一。”海格着，耸了耸宽大的肩膀。

What if she got in a bidding war with Sherry and Melanie and lost out?

万一她跟雪莉和美兰妮展开竞价大战最后输掉了怎么办？

Just in case, though, take a pump, like a pump to fill air.

只是以防万一，带上一个泵，像充气泵一样的东西。

Before signing a contract you should pore over every clause in case you are fooled.

签合同前应仔细审读合同的每一条款，以防万一上当受骗。

But, could the building blocks of life have come from somewhere else?

但是万一这些原始生命来自于别处？

Really? yes. Now, should that happen, I would ask you to find some way to suppress your libido.

真的吗？是的。如果万一发生这种情况，我要求你找到一种压制自己性冲动的办法。

That is kind of weird! What if she is a psycho or something like that?

这有点儿不靠谱。万一那人是个精神病呢?

You think of some creative art project that requires denim?

万一你想到用牛仔裤进行什么艺术创作呢？

What if he just sat there with the hat over his eyes for ages, until Professor McGonagall jerked it off his head and said there had obviously been a mistake and he'd better get back on the train ?

他突然想到要是万一根本不挑选他会怎么样呢? 如果帽子扣在他头上盖住他的眼睛好长时间，最后还是麦格教授把帽子从他头上拽下来，然后，着是搞错了，要他最好还是坐火车回去，那又会怎么样呢?

Oh, good. But just in case, I...brought some backup.

那好。但以防万一，我...带了一些后援。

Well, not at the moment. But if there were a change in family circumstances, I'd be a long way from home.

目前来看是没有。但是万一我的家里发生了什么变故，而我却在千里之外。

The king would not kill me whilst I was useful to him, but what if he changed his mind?

只有我对国王有用国王才不会杀我，但万一他改变主意了呢？

Have some candlees at hand in case lights fuse.

手边准备点蜡烛，万一险丝烧断了。

Very close. You can't miss it. The party will start at sixish. Just bring some drinks. And this is a map of my new place and my mobile number. Just in case you get lost.

非常近，你绝对不会弄错的。派对大概6点钟开始，带一些饮料来就好了。这是我新家的地图，还有我的手机号码，以防万一你迷路了。

What if I fail then I don't have anything else?

万一我失败了一无所有怎么办？

However, in case the tether tears, the EVA suit has a backup system.

然而，万一绳子扯破了，舱外航天服还有一个后备系统。

Put things inside like flashlights, medications, bottles of water and a sturdy pair of shoes just in case you end up having to walk over glass or debris.

把东西放在里面，比如手电筒、药物、瓶装水和一双结实的鞋子，以防万一你不得不从玻璃或碎片上走过。

It's always good to pack something cozy just in case.

带件温暖衣物以防万一总是好事。