3 sentences

1. 把你的肚脐遮起来。

   bǎ nǐ de dù​qí zhē qǐ lai.

   Cover your belly button.

   Source: OpenSubtitles

2. 给他们看你的肚脐！

   gěi tā​men kàn nǐ de dù​qí!

   Show them your belly button!

   Source: AI Challenger 2017

3. 从出生起，同卵双胞胎就有不同的指纹和肚脐。

   cóng chū​shēng qǐ, tóng​luǎn​shuāng​bāo​tāi jiù yǒu bù​tóng de zhǐ​wén hé dù​qí.

   From birth, identical twins have different fingerprints and belly buttons.

   Source: CCMatrix