英语词汇pit prop怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	pit prop
释义	pit propn. a balk of wood used to support the roof of a coal mine (煤矿中的)坑木，窑木
随便看	residuary residue residuum re-sign resign resignal resignation resigned resignedly resignedness resigner resile resilience resiliency resilient resiliently resin resinate resinate resinoid resinous resist resistance resistant resister

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