他把钥匙放进了口袋里。

Tā bǎ yàoshi fàng jìn le kǒudài lǐ.

He put the key into his pocket.

我翻遍了所有口袋，还是没找到手机。

Wǒ fān biàn le suǒyǒu kǒudài, háishi méi zhǎodào shǒujī.

I searched through all my pockets but still couldn't find my phone.

这件外套的口袋特别深，能装不少东西。

Zhè jiàn wàitào de kǒudài tèbié shēn, néng zhuāng bù shǎo dōngxi.

The pockets on this coat are especially deep and can hold quite a lot.