2 sentences for 嘴脸 (zuǐ​liǎn)

1. 大家早就看穿了他那副丑恶的嘴脸。

   dà​jiā zǎo jiù kàn​chuān le tā nà fù chǒu'è de zuǐ​liǎn.

   Everyone had long ago seen through his ugly true colors.

   Source: Dong Chinese Dictionary

2. 他那一脸横肉的嘴脸看着就让人害怕。

   tā nà yī liǎn héng ròu de zuǐ​liǎn kàn zhe jiù ràng rén hài​pà.

   His bloated and aggressive-looking face was frightening to look at.

   Source: Dong Chinese Dictionary