dis-, 不，非。facile, 简单的，好做的，词源同fact, efficient. 即不好做的，困难的。

1. He had a reputation for being bloody-minded and difficult.

他为人刻薄、难相处是出了名的。

2. I have a fair idea of how difficult things can be.

我大致了解情况会有多困难。

3. It would be difficult to find two men who were more dissimilar.

很难找到彼此间差异更大的人了。

4. There's no petrol, so it's very difficult to transport goods.

没有汽油，因此很难运输货物。

5. Adults need to live their own lives and that's difficult with children.

大人需要过他们自己的生活，但有了孩子就很难做到了。