有人发邮件问我：“兄弟，我需要一些给女孩发信息的技巧帮助” 或者“老兄，我拿到了女孩的号码，但是她没有回信息给我…我该怎么办呢？”

I get guys emailing me all the time saying "Dude I need some help texting girls" or "Man, I got this girls number but she hasn't text me back… what should I do? ".

youdao

我给家里打了电话，让他们一定要向征兵委员会说清楚，我已经超过期限九天了，但我并不是抵制征兵，要问问他们我该怎么做。

I called home to make sure the draft board knew I hadn't been a draft resister for nine days and asked what I should do.

youdao

我不知道该怎么办，给医院的电话打不通！

I don't know what to do; I can't get through to the hospital!

youdao

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。

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