You probably won't need to call—but take my number, just in case.

你很可能无需打电话，不过还是记下我的电话号码吧，以防万一。

《牛津词典》

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

我也给他买了一份人寿保险以防万一。

《柯林斯英汉双解大词典》

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

我想我们已经讨论过了这个问题，但为保险起见，我再问你一次。

《柯林斯英汉双解大词典》

I can't give it what it wants," know that when you're writing code and the problems that will remind of this, if you absolutely have to kill your program, you don't have to close the window, CTRL+C reboot crazy stuff like that, generally you can hit CTRL+C and it will just abort the program right where it is, in case you ever get trapped in some awkward situation.

我不能给它所要的“,当你在写代码时，程序将,提醒这个问题，如果你不得不,关闭这个程序，你不需要关闭这个窗口，重启像那样的疯狂举动，通常你可以敲,它将会在这个地方终止那个程序，假使你陷入了尴尬的处境。

哈佛公开课 - 计算机科学课程节选