2 sentences

1. 由于地壳运动，这里形成了深邃的低谷。

   yóu​yú dì​qiào yùn​dòng, zhè​lǐ xíng​chéng le shēn​suì de dī​gǔ.

   Due to tectonic movements, a deep valley was formed here.

   Source: Dong Chinese Dictionary

2. 即使处于人生的低谷，他也从未放弃过梦想。

   jí​shǐ chǔ​yú rén​shēng de dī​gǔ, tā yě cóng​wèi fàng​qì guo mèng​xiǎng.

   Even at the lowest point in his life, he never gave up on his dreams.

   Source: Dong Chinese Dictionary