基本解释[能源科學技術]硬煤刨煤機英汉例句雙語例句They textbook contains more explanatory material than models and is therefore hard to plough through.這本教科書中說說明性材料多於 範文，所以難以閲讀。hard plough更多例句词组短语短語hard -coal plough [鑛業]硬煤層刨煤機hard plough更多词组专业释义能源科學技術硬煤刨煤機