a bad thing的用法和样例：
- In given conditions a bad thing can be turned into a good one.
- To eat too much is as much a bad thing as to eat nothing.
- A bad thing can be turned into a good one.
- We can see that friction is not always a bad thing.
- Too much freedom is a bad thing.
- Secondly, the study is not a bad thing.
a bad thing的相关资料：