感谢每天给我点赞的小伙伴们，感谢你们对我的鼓励和支持，咱们一起学起来。
Helping other people is extremely gratifying. 

4'

That novel has a lot of different stories happening at the same time; it's very confusing. 

6'

The circus trapeze artist performed a lot of 
dangerous stunts. He was a daring young man.

5'

敲黑板
gratifying 令人满足的、令人开心的
trapeze (马戏团的)高空秋千
stunt 特技表演
daring 大胆的、勇敢的