| 单词 | hammer drill |
| 释义 | hammer drillBrE /ˈhæmə drɪl/ NAmE /ˈhæmər drɪl/ (BrE alsoperˈcussion drill ) noun a drillthat makes holes in stone or bricks by making very fast hitting movements as it turns 凿岩机；冲击钻 |
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