just in case

Extra boiling water should be kept at hand just in case it is needed.

身边应多准备一些开水，以备不时之需。

There are candles strategically placed — just in case we have another power cut.

我们把蜡烛放在合适的地方,以防再停电.

You'd better have two strings to your bow, just in case of emergency.

你最好有两手准备, 以防万一.

They're both asleep upstairs, but you don't mind listening just in case of trouble, do you?

他们都在楼上睡着了，但你不介意留神听着点以防万一吧？

It may rain and you'd better take an umbrella just in case.

天可能要下雨,你最好把伞带上,以防万一.

He gripped his pistol tightly, just in case.

他握紧手抢, 以防万一.

But just in case you don't, I won'tspoilfor you right now.

但以防万一, 我并不打算立刻呈现出来.

I have also taken out a life insurance policy on him just in case.

为防万一，我还给他买了一份人寿保险。

I guess we've already talked about this but I'll ask you again just in case.

我想我们已经谈过这个问题了，不过为了以防万一，我再问你一次。

And I want to get you out of the line of fire too, just in case. "

我也很想把你从火线上调开, 以防万一. ”

Take an umbrella just in case.

帶把雨傘以防萬一吧.

It may rain you'd better take an umbrella ( just ) in case ( it does ).

可能下雨--你最好带把伞, 以防万一 ( 下起来 ).

It may rain; you'd better take an umbrella just in case.

可能下雨, 拿把伞吧,以防万一.

There's cops all over the hospital and Tessio's men hang around too, just in case.

医院里到处都有警察;忒希奥手下的人在那儿窜来窜去, 以防万一.