2 sentences

1. 看看你的脚趾之间的污垢。

   kàn​kan nǐ de jiǎo​zhǐ zhī​jiān de wū​gòu.

   Look at the dirt between your toes.

   Source: CCMatrix

2. 以前清洗后留下的污垢也会划伤表面。

   yǐ​qián qīng​xǐ hòu liú xià de wū​gòu yě huì huá shāng biǎo​miàn.

   Dirt left over from previous cleanings can scratch the surface as well.

   Source: CCMatrix