a carrot and stick approach的用法和样例：
- The trade negotiators took a carrot and stick approach to the automobile talks.
- Sometimes I just have to resort to the carrot and stick approach with my children.
- Dick's father used the carrot and stick when he talked about his low grades.
- Thus, "carrot and stick" approach to motivatiton is adopted under this system.
- I scrub off a carrot and chop it into bite-size pieces.