他的人生经历了很多波折。
tāde rénshēng jīnglì le hěnduō bōzhé 。
He has gone through many twists and turns in his life.
这个项目遇到了不少波折。
zhègè xiàngmù yùdào le bùshǎo bōzhé 。
This project has encountered quite a few twists and turns.
尽管经历了波折，他们仍然坚持不懈。
jǐnguǎn jīnglì le bōzhé ， tāmen réngrán jiānchí bùxiè 。
Despite the twists and turns, they remain persistent.