形容词词组：hazardous waste(有害废弃物)>solid waste(固体废弃物)>toxic waste(有毒废物)>nuclear waste(核废料)
名词词组：waste time>waste management>waste disposal(废物处理)>waste site(废物处置场)
动词词组：reduce waste>generate waste>dispose waste
n. 1.(an unnecessary or wrong use of money, substances, time, energy, abilities, etc.)浪费;滥用
That meeting achieved absolutely nothing - it was a complete waste of time.
She's been a housewife for two years and it's such a waste of her talents.
2. (unwanted matter or material of any type, especially what is left after useful substances or parts have been removed)废品，垃圾，废物，废料
He opposes any kind of nuclear waste being dumped at sea.
Oil spills are common, as is the dumping of toxic industrial wastes.
3.waste ground (mainly UK) an area of ground in or near a city that is not built on or used in any way(城市里或市郊的)荒地
wastes [ plural ](large areas of land that are not used to grow crops and have few living animals or plants 荒原，不毛之地)
the Arctic wastes of northern Siberia
v.(to use too much of something or use something badly when there is a limited amount of it 浪费;未好好利用)
We've wasted enough time already.
1.waste away:(to gradually get thinner and weaker, in a way that is unhealthy 逐渐消瘦;渐渐瘦弱)
You're wasting away!
2.waste of space：(informal)a person or thing that is not useful or helpful 废物，无用的人
That man is a total waste of space.
3.waste product:(a substance of no value or use that is made during a process in which something useful is produced 无用的副产品;工业垃圾)
Cadmium is a toxic waste product of the electronics industry.