形容词
中文翻译：空闲的
同义词：
['unused', 'vacant', 'idle-handed']
例句：
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1. The idle hours are the hardest to fill up.
空闲时间最难打发。
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2. He's always idling in his car when he's waiting for someone.
他每次等某人时，总是在车里闲逛。
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3. The idle hands of a man can be used to do many things.
一个人的闲散之手可以用于做很多事情。