Here's a harder case to think about.

但想想更复杂的情况。

China is a complex market, so huge and it's also a hard case.

中国市场巨大而且复杂，在其中发展也是艰难的。

You see a single roll of grain that's covered in a hard case.

你看到一行覆盖着硬壳的玉米粒。

Well, again, this is one of the hard cases.

好吧, 再一次, 这是困难的案例之一。

What makes Naoko such a hard case for you?

是什么让直子对你来说如此困难？

So, um... Mom tells me you're working on a hard case.

那么 嗯...妈妈告诉我你在 处理一个很难的案子。

All right, hard case.I see the usualmethods aingt gonna work with you.

那好 硬骨头 普通的方法对付不了你们。

You know, I had a pretty hard case this week, and I-I need to relax.

我这周遇上个棘手的案子，需要放松放松。