Yes?

请说
Okay. His idea was the following.

好的他的想法是这样的
You take a standard mass and you maybe go to a seesaw.

你定一个标准质量然后找个跷跷板
You put the standard mass here

把标准质量放在这里
and you put some other fellow at the mass you're looking at there.

然后把待测物体放在这里
You adjust the lengths and when it balances,

调整它与支点的距离然后当它平衡时
you can sort of tell what this mass is, right?

你就能得到质量是多少对吧
But suppose you were in outer space.

但假如你在外太空
There's no gravity.

没有重力
Then the seesaw will balance, even if you put a potato on one side

那即使你一边放个土豆一边放头大象
and an elephant on the other side.

那跷跷板也会平衡
You cannot tell the mass,

你无法测出质量