jackhammer

n.手提钻

一种用于打孔或破碎硬物的重型电动工具；

名词；

1、The construction workers used a jackhammer to break through the concrete.
建筑工人使用了一台破碎锤来打破混凝土。
2、The sound of the jackhammer was deafening, making it difficult to concentrate.
破碎锤的声音震耳欲聋，让人难以集中注意力。