2 sentences

1. 如果不悬崖勒马，他迟早会沦为阶下囚。

   rú​guǒ bù xuán​yá​lè​mǎ, tā chí​zǎo huì lún​wéi jié​xià​qiú.

   If he doesn't pull back from the brink, he will sooner or later end up a prisoner.

   Source: Dong Chinese Dictionary

2. 他收紧了手中的勒，马儿慢慢地在集市中停了下来。

   tā shōu​jǐn le shǒu zhōng de lè, mǎ r màn​màn de zài jí​shì zhōng tíng le xià​lai.

   He tightened the reins in his hand, and the horse slowly came to a halt in the marketplace.

   Source: Dong Chinese Dictionary