她摸着自己的胸笑了。

Tā mōzhe zìjǐ de xiōng xiàole.

She laughed and touched her chest.

他的胸很宽广。

Tā de xiōng hěn kuānguǎng.

His chest is broad.

心脏在胸腔里。

Xīnzàng zài xiōngqiāng lǐ.

The heart is in the chest.