a mixed bag的用法和样例：
- The songs on this record are quite a mixed bag.
- She invited a mixed bag of people to her party.
- A mixed bag of people attended the meeting.
- The girl invited a mixed bag of people to her birthday party.
- The first Bush administration was a mixed bag in terms of economic policy.
- The competition entries were a very mixed bag.
a mixed bag的相关资料：