jack hammer

基本解释

Jack continues to hammer at Anna's face, which is becoming a bloody mess.
杰克继续猛击安娜的脸。安娜的脸变得血肉模糊。
But it does not add up to a case for taking a jack-hammer to the Reagan coalition.
但这当然不是说要去瓦解始于里根时期的共和党联盟。
Attached electric jack hammer arm and air supply Veronica reduction package movie scene!
附电动伸缩手臂及空中罗维尼卡补给包还原电影情景！
bbs.boy-toy.net

At best, it is a jack-hammer solution to an Emily Post problem.
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After all, the piano is such a welter of machinery: Push a key and before you hear a note, a small lever pushes against an intermediate lever, which pushes a jack, which pushes a roller, which pushes a hammer toward the strings.
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A jackhammer is a large hammer, powered by compressed air, that is used for breaking up rocks and other hard material.