In case you should need any help, here's my number.

万一你需要帮助的话，这是我的电话号码。

《牛津词典》

I'll stay around in case you need me.

我就待在这儿，也许你用得着我。

《牛津词典》

You'd better take the keys in case I'm out.

你最好带上钥匙以防我不在家。

《牛津词典》

The latest version of the box uses mobile phone technology, and solar panels in case the electrical power fails.

VOA: special.2009.10.12

Recorded September 9th, 1947, Grace Murray Hopper in case you're interested. This was the lab book of Grace Murray Hopper.

想知道的话大概是在1947年9月9号，记载于,的实验手册中。

麻省理工公开课 - 计算机科学及编程导论课程节选

Yeah. So the answer, in case you didn't hear it, was, again, if I'm a gambling person, I could start like a way down here.

答案是，如果我是一个赌徒，我可以再这边开始对不对？,如果我在赌博，我会说，嘿。

麻省理工公开课 - 计算机科学及编程导论课程节选

Then they explain the bizarre name of the company, just in case the customer is confused.

FORBES: The Profit Givers

In case you missed it, the claim is right there in the law's title.

WSJ: Review & Outlook: ObamaCare Bait and Switch

Make sure your cell-phone number is on the pet's collar, in case he gets lost.

CNN: Tips for road tripping with pets