3 sentences

1. 他试图抹平衬衫上的褶皱。

   tā shì​tú mǒ​píng chèn​shān shàng de zhě​zhòu.

   He tried to smooth out the wrinkles on his shirt.

   Source: Dong Chinese Dictionary

2. 他正在用熨斗烫平衬衫上的褶皱。

   tā zhèng​zài yòng yùn​dǒu tàng​píng chèn​shān shàng de zhě​zhòu.

   He is using an iron to smooth out the wrinkles in his shirt.

   Source: Dong Chinese Dictionary

3. 地壳运动使这些岩层产生了巨大的褶皱。

   dì​qiào yùn​dòng shǐ zhè​xiē yán​céng chǎn​shēng le jù​dà de zhě​zhòu.

   Crustal movements caused these rock layers to form massive folds.

   Source: Dong Chinese Dictionary