裤兜

tā pāi le pāi kù dōu kàn yào shi shì fǒu hái zài

他拍了拍裤兜看钥匙是否还在。

He patted his trouser pocket to see if his keys were there.

tā de shǒu fàng zài kù dōu li

他的手放在裤兜里。

His hands were on trouser pocket inside.