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单词 pit prop
释义 pit propBrE /ˈpɪt prɒp/NAmE /ˈpɪt prɑːp/ nouna large piece of wood used to support the roof of part of a coal mine from which coal has been removed (煤矿的)木支架,坑木,坑柱
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更新时间:2025/1/9 22:43:18