他的妻子为何不能这么做？

Why couldn't his wife do this?

youdao

我们在这里不能这么做。

Now we can't do this during a test in here.

youdao

原则上没有不能这么做的理由。

There is no reason in principle why you couldn't do it.

youdao

And so the big issue is -- this is what you must never do, but this is what you got to do if your phalanx is broken.

所以现在的大问题是,这也许是你在战场上永远不能做的事,但你在方阵被打散时不得不这么干

耶鲁公开课 - 古希腊历史简介课程节选

You can't do it; you can't enjoy all ten of them.

当然你可以这么做,但你不能同时享受它们带来的乐趣

耶鲁公开课 - 金融市场课程节选

So if I'm still alive,you can't do that sort of thing.

如果我还活着，你就不能这么做。

耶鲁公开课 - 死亡课程节选