你的嘴脏了，用纸巾擦一下吧。

Nǐde zuǐ zāng le, yòng zhǐjīn cā yíxià ba.

Your mouth is dirty, wipe it with a tissue.

听说这部电影很感人，要准备纸巾擦眼泪。

Tīngshuō zhè bù diànyǐng hěn gǎnrén, yào zhǔnbèi zhǐjīn cā yǎnlèi.

I heard this movie is very touching, so you should prepare some tissues to wipe your tears.

我流太多汗了，要用毛巾擦一下。

Wǒ liú tài duō hàn le, yào yòng máojīn cā yíxià.

I sweat too much, I need to use a towel to wipe it.