自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
ADJ 无事可做的;闲散的 If people who were working are idle, they have no jobs or work.
Employees have been idle almost a month because of shortages.
ADJ (机器、工厂等)闲置的 If machines or factories are idle, they are not working or being used.
Now the machine is lying idle.
...factories that had been idle for years.
ADJ 懒散的;懒惰的;无所事事的 If you say that someone is idle, you disapprove of them because they are not doing anything and you think they should be.
...idle bureaucrats who spent the day reading newspapers...
I never met such an idle bunch of workers in all my life!
ADJ 琐碎无聊的;毫无意义的 Idle is used to describe something that you do for no particular reason, often because you have nothing better to do.
Brian kept up the idle chatter for another five minutes.
ADJ 徒劳的;徒然的;无用的 If you say that it is idle to do something, you mean that it is not worth doing it, because it will not achieve anything.
It would be idle to pretend the system is perfect.
ADJ 虚张声势的;唬人的 You refer to an idle threat or boast when you do not think the person making it will or can do what they say.
It was more of an idle threat than anything...
His statement isn't merely an idle boast.
VERB 无所事事;闲混;闲逛 If you idle, you spend time in a lazy way, doing nothing in particular.
When they reached his house, Scobie idled a bit, finishing his cigarette...
We spent many hours idling in one of the cafes that line three sides of the tiny piazza...
VERB 使（工厂等）停工 To idle a factory or other place of work means to close it down because there is no work to do or because the workers are on strike.
...idled assembly plants.
VERB 使闲散;使无事可做 To idle workers means to stop them working.
The strike has idled about 55,000 machinists.
罢工使约 55,000 名机械师无事可做。
VERB (发动机、车辆)空转 If an engine or vehicle is idling, the engine is running slowly and quietly because it is not in gear, and the vehicle is not moving.
Beyond a stand of trees a small plane idled...
Her Daimler limo waits with its engine idling.