wastepaper是不可数名词。 wastepapern.纸屑;adj.废纸的; 例如Most of his plans found their way into the wastepaper basket. Regression of relationsh...
waste management 污染物排放控制技术; waste water 废水 ; 污水 ; 浪费水 ; 水处理; Crop waste 作物废料; waste pipe 污水管 ; [建] 废水管 ; 排水管 ...