“如果对于拿如此多的东西没有一个很好的理由——比如你在旅行或者喂养孩子——如此你就背负着许多没用过的东西，”她说。

"If you don't have a really good reason to carry around a lot of stuff - like you're traveling or nursing a baby - then you're burdening yourself unnecessarily," she says.

youdao

如果你从来没用过这些竖线，它们在，回车键的上面。

And if you've never used those, they're usually above your Return key.

youdao

如果从没用过Data： Dumper，则应该阅读文档(“ perldoc Data： Dumper ”)并在程序中尝试。

If you have never used Data: : Dumper, you should read the documentation (" perldoc Data: : Dumper ") and try it in your programs.

youdao

If you haven't turned it on or don't know what that thing is here we go.

如果还没用过它,或者不懂它是什么,请看下面。

哈佛公开课 - 计算机科学课程节选

And if you've never used those, they're usually above your Return key.

如果你从来没用过这些竖线，它们在,回车键的上面。

哈佛公开课 - 计算机科学课程节选

Now, less than is just, if you haven't used it before, it's just the operator you'd expect, it's comparing two things and it's going to return either true or false depending on whether the first argument is false less than the second argument.

现在，小于这个符号是，如果你之前没用过它的话，它就是你期望的那个运算符，它会比较两个独享,然后基于第一个参数是不是,小于第二个参数,返回true或者。

麻省理工公开课 - 计算机科学及编程导论课程节选