1. I waited in the car while idling the engine. 我在汽车里待着而让发动机空转着。
2. Software can no longer, in good conscience, waste so much idle time while users work. 凭良心说，软件再也不能在用户工作时浪费这么多空闲时间了。
3. So shops are mostly empty in the mornings and idle employees sit around by open doors and windows. 因此商店里早晨大多没有客人，空闲的店员们就坐在敞开的门和窗户附近乘凉。
英英解释
n.
1. the state of an engine or other mechanism that is idling
2. run disconnected or idle
3. be idle; exist in a changeless situation adj.
1. not in action or at work
2. without a basis in reason or fact
3. not in active use
4. silly or trivial
5. lacking a sense of restraint or responsibility
6. not yielding a return
7. not having a job
