基本解释[能源科学技术]硬煤刨煤机英汉例句双语例句They textbook contains more explanatory material than models and is therefore hard to plough through.这本教科书中说说明性材料多于 范文，所以难以阅读。hard plough更多例句词组短语短语hard -coal plough [矿业]硬煤层刨煤机hard plough更多词组专业释义能源科学技术硬煤刨煤机