barebacked ;
例句:
The child was bare to the waist.
那孩子打赤膊.
The day was so hot that the farmers stripped to the waist.
天很热,农夫们都打着赤膊.
Misers put their back and their belly into pockets.
守财奴宁可打赤膊饿肚皮也舍不得掏腰包.