如果需要在当前日期中使用一个，那就没什么。

If you need one to pop in the current date, that's fine.

youdao

如果需要在查询中使用引用，则使用它作为指代引用的名称。

This is the name that will be used to refer to the reference if you wanted to use the reference in a query.

youdao

如果需要在您的工作站和远程主机之间上传或下载数据，会发生什么？

What happens if you need to upload or download data between your workstation and the remote host?

youdao

But that way you can give me Monday to change your section if you need to, which I hope you won't.

如果需要的话，你们可以在周一换组，虽然我不希望你们改。

哈佛公开课 - 幸福课课程节选

If you did it in the lab or on your computer screen, you would do it by pushing buttons.

如果你在实验室做，或者在电脑上做，你需要按键。

耶鲁公开课 - 心理学导论课程节选

You know, if you want to measure the potential energy of something in a gravitational field, you have to define the zero somewhere, right, because it's arbitrary. You can set it anywhere you want. It's the same with enthalpy.

你知道，如果你想测量重力场,中某种东西的势能，你需要，在某处定义一个零点，对吧？,因为势能的值是任意的,你可以把它设定在。

麻省理工公开课 - 热力学与动力学课程节选