这条路太弯了，开车要小心。

zhè tiáo lù tài wān le, kāi chē yào xiǎo xīn.

This road is too curvy; you need to be careful driving.

奶奶的背已经弯了，走路很慢。

nǎi nai de bèi yǐ jīng wān le, zǒu lù hěn màn.

Grandma's back is already hunched; she walks very slowly.

河边有一棵弯弯的老树，特别好看。

hé biān yǒu yī kē wān wān de lǎo shù, tè bié hǎo kàn.

There's a crooked old tree by the river; it's especially beautiful.