调试输出消息能够帮助您了解ssl层到底发生了什么问题。

The debug output message can help you to know what exactly happens at the SSL layer.

youdao

不仅会帮助你理解这个功能到底应该干什么，还会在干成了的时候通知你。

This helps you understand what the feature ought to do, and to know when you got it right.

youdao

这样做可帮助你确定到底可以省多少钱。

This will help you to determine how much you really are saving.

youdao

Well, you'll know when it crashes, that doesn't help you very much, but you can't always tell whether something's stuck in an infinite loop or whether it's simply taking a long time to compute.

好，你将学到它在什么时候会崩溃，这对你帮助并不大，但是你不能辨别出到底是在一个循环中,有什么东西卡住了呢,还是程序需要很长的时间来计算一个结果呢。

麻省理工公开课 - 计算机科学及编程导论课程节选