waste

　　I'm not going to waste any more words on the subject. 此句中waste用作及物动词,意为"浪费,滥用",这是waste的常用法。 waste还有其它用法。如:

　　① It's a waste of time doing that. (waste用作名词,意为"浪费,滥用"。)

　　② That was an area of waste ground in the past. (waste用作形容词,意为"无人烟的,未开垦的"。)

　　③ They won't listen, so don't waste your breath telling them. (waste one's breath意为"白费唇舌"。)