n.浪费( waste的名词复数 );荒地;废料;白费;
例句:
Exhaust vaporous wastes through a pipe.
通过管道把废蒸汽排空。
Within a few years they had transferred barren wastes into fertile fields.
几年之内他们就把荒地变成了良田.
Environmental engineers are concerned with the disposal of human wastes.
环境工程师们关心人类排泄物的处置.