It is of advantages, which are to reduce cost and be good results of environmental protection, that the curbs made of lime and mixed sand are used to replace those made of cement concrete.是什么意思_It is of advantages, which are to reduce cost and be good results of environmental protection, that the curbs made of lime and mixed sand are used to replace those made of cement concrete.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句