2 sentences

1. 我有次把购物单写在手背上。

   wǒ yǒu cì bǎ gòu​wù dān xiě zài shǒu​bèi shang.

   I once wrote a shopping list on the back of my hand.

   Source: OpenSubtitles

2. 他那双巨手的手背上满是浓密的黑汗毛。

   tā nà shuāng jù shǒu de shǒu​bèi shang mǎn shì nóng​mì de hēi hàn​máo.

   The backs of his huge hands were covered in thick black hair.

   Source: UM-Corpus: Education