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单词 jackhammer
释义
jackhammer
(ækhæmər )
Word forms: jackhammers
countable noun
A jackhammer is a large hammer, powered by compressed air, that is used for breaking up rocks and other hard material.
Outside a jackhammer was pounding away at a particularly stubborn piece of concrete.
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更新时间:2024/12/23 21:14:54