Jn. 17:6 I have manifested Your name to the men whom You gave me out of the world.

约十七6你从世上赐给我的人，我已将你的名显明与他们。

youdao

Every week, out of the money you gave me for everyday use, I saved a little bit.

每周，我都会从你给我的日常开销中省下一些钱。

youdao

You gave me a fright jumping out at me like that.

你这样跳起来扑向我，把我吓了一大跳。

《牛津词典》

But notice what this does. The first thing it does is, it says, let's check and make sure x is greater than or equal to 0. If it isn't, notice what's going to happen. None of that block is going to get executed, and it's going to come down here and print out a useful piece of information, which says, hey, you gave me a negative number. I don't know how to do this.

做的是和以前一样的事情,但是注释它做了什么，第一件做的事情就是,程序说，要去检查并且确信x是大于等于0的，如果不是的话，请注意会发生什么,下面的代码都不会被执行,程序会到这里来然后显示一些有用的信息,信息会说，嘿，你给了我一个负数,我不知道该怎么弄这个了。

麻省理工公开课 - 计算机科学及编程导论课程节选