我的腰疼得厉害。

Wǒ de yāo téng de lìhài.

My waist hurts a lot.

他系着皮带围在腰上。

Tā jì zhe pídài wéi zài yāo shàng.

He has a belt tied around his waist.

这条裙子很合身，显得腰细。

Zhè tiáo qúnzi hěn héshēn, xiǎnde yāo xì.

This skirt fits well and makes the waist look slim.