今天我要说，要首先从您的饮食中去掉的就是奶制品。

Today I say the first thing you should take out of your diet is dairy.

youdao

注意要首先定义 imageIcon。

Notice that you define the imageIcon first.

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想在心里旋转一个物体，要首先试着比划。

To learn how to rotate an object mentally, firsttry a pantomime.

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And the first thing you do is ask is it an instance of some problem that other people have already solved?

而且你以前从没碰过这个问题,你首先要做的一件事就是问问自己,这是不是一个别人已经解决了的问题？

麻省理工公开课 - 计算机科学及编程导论课程节选

The first thing I have to do is give you understanding of the physics of the gas discharge tube.

首先要做的就是让你们理解,气体放电管的物理学原理。

麻省理工公开课 - 固态化学导论课程节选

First of all, we have to remember that sending people to war is not necessarily implying that they'll die.

首先，我们要明确，把人们送去参战,并不一定代表他们会死。

耶鲁公开课 - 公正课程节选