n.功用，效用；有用的物体或器械；公用事业公司；公用事业adj.有多种用途的；各种工作都会做的；能在数个位置作替补的；为获得经济价值而饲养 变形： 复数：utilities 双语释义：n.(名词)[U] 功用,效用 quality of being useful[P] 公用事业 any useful service for the public, such as supplies of water to the home, the bus services, etc.英英释义： utility[ ju:'