变坏为力：

B: 真了不起！这就是面对挑战时应有的态度。

That's amazing! That's the attitude we should all have when faced with challenges.

化危机为机遇：

A：今天怎么样啊？

How are you today?

B：别提了。刚刚失业，性情不好。

Don't ask..I just lost my job. I'm in a bad mood.

A：那不是正好的吗？你不是一直想开你自己的甜品店吗？

Isn't that perfect? Haven't you always said you'd like to open your own pastry shop?

B： 说的有道理啊！我可以化危机为机遇。呢。。。可以马上行动起来。。。

That's a really great point! I can turn lemons into lemonade..hmm..I'm going to get started right away..