A city road must be broken up by jackhammers . 城市道路必须用风镐掘开。
2.
He ' s behind the bricks ! jackhammer 他在砖墙后面，打透它！
3.
So they bring in a jackhammer , 他们拿来了手提钻枪
4.
Boy , give me the jackhammer 小伙子把手提钻给我
5.
A system or device for doing work , as an automobile or a jackhammer , together with its power source and auxiliary equipment 机械系统用来工作的系统或装置，如汽车或手持式凿岩机，包括其动力源和辅助设备
