3 sentences

1. 滚石不生苔。

   gǔn​shí bù shēng tái.

   A rolling stone gathers no moss.

   Source: Tatoeba

2. 阴暗潮湿的墙角生出了厚厚的一层苔。

   yīn'àn cháo​shī de qiáng​jiǎo shēng​chū le hòu​hòu de yī céng tái.

   A thick layer of moss grew in the dark, damp corner of the wall.

   Source: Dong Chinese Dictionary

3. 医生仔细观察了他的舌苔。

   yī​shēng zǐ​xì guān​chá le tā de shé tāi.

   The doctor carefully examined the coating on his tongue.

   Source: Dong Chinese Dictionary