3 sentences

1. 为什么鸟屎擦不掉呢？

   wèi​shén​me niǎo shǐ cā bu diào ne?

   Why isn't the bird poop coming off?

   Source: AI Challenger 2017

2. 小心点，别把指纹擦掉了。

   xiǎo​xīn diǎn, bié bǎ zhǐ​wén cā diào le.

   Be careful not to wipe off the fingerprints.

   Source: UM-Corpus: Subtitles

3. 他擦掉了下巴上的几滴口水。

   tā cā diào le xià​ba shang de jǐ dī kǒu​shui.

   He wiped a dribble of saliva from his chin.

   Source: UM-Corpus: News