The problem of dropsical roadway has been restricted at the end of the coal mine production safety.
巷道底臌问题一直制约着煤矿的安全生产。
英文例句大全为您提供dropsical英文例句大全,dropsical英文造句,关于dropsical的英语句子,单词dropsical怎么造句,dropsical英文例句大全有哪些,哪些英语句子是关于dropsical,英语单词dropsical的句子,单词dropsical如何造句,dropsical怎么造句等。