2 sentences

1. 在90年代，他的事业经历跌宕起伏。

   zài90 nián​dài, tā de shì​yè jīng​lì diē​dàng​qǐ​fú.

   In the '90s, his career suffered ups and downs.

   Source: OpenSubtitles

2. 这部电视剧的剧情跌宕起伏，引人入胜。

   zhè bù diàn​shì​jù de jù​qíng diē​dàng qǐ​fú, yǐn​rén​rù​shèng.

   The plot of this TV series is full of twists and turns, making it very captivating.

   Source: Dong Chinese Dictionary