耀久九英英词典

jack hammer

J 开头单词

柯林斯词典

    jackhammer /ˈdʒækˌhæmə/ (jackhammers)

  • 1. N-COUNT A jackhammer is a large hammer, powered by compressed air, that is used for breaking up rocks and other hard material. 手提钻

    Outside a jackhammer was pounding away at a particularly stubborn piece of concrete. 在外头，一个手提钻正在猛打一块特别坚硬的混凝土块。

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