If you leave your car idling away outside the house for an hour or more, you will burn more petrol than you think.
如果你让汽车在室外不熄火一个小时或更长时间，车子耗油量会比你想像的要大。
He is a very active sort of person and cannot bear to see others idling about.
他是那种积极肯干的人，看不惯别人懒懒散散。
Stop idling and help me clean up.
别游手好闲的，来帮我打扫打扫吧。
