2 sentences for 下山 (xià​shān — descend)

1. 天快黑了，我们赶紧下山吧。

   tiān kuài hēi le, wǒ​men gǎn​jǐn xià​shān ba.

   It's getting dark; let's hurry down the mountain.

   Source: Dong Chinese Dictionary

2. 山顶上风云变幻，我们必须在暴雨前赶快下山。

   shān​dǐng shàng fēng​yún biàn​huàn, wǒ​men bì​xū zài bào​yǔ qián gǎn​kuài xià​shān.

   The weather on the mountain top is changing rapidly; we must descend quickly before the rainstorm.

   Source: Dong Chinese Dictionary