首先，把两个相同重量的物体放进两个盒子里。然后盖上盒子。

First, put two objects with the same weight into two boxes. Then cover the boxes.

youdao

所以你要拿着两个盒子。

So you have to take both boxes.

youdao

这有两个盒子。

There are two boxes.

youdao

Well, at this point I have two boxes.

嗯，在这里我有两个盒子。

哈佛公开课 - 计算机科学课程节选