have nothing to do;be at an idle end;be at loose ends;be occupied with nothing;be at grass ;

Adolescents are most likely to get into trouble when they're at a loose end.
青少年无所事事的时候最容易惹出麻烦来。
来源:《柯林斯高阶英汉双解学习词典》Formerly he often lingered about [ around ] a park, doing nothing.
从前他时常在公园里 逛荡, 无所事事.
来源:《现代汉英综合大词典》The prospect of waiting around just twiddling his thumbs was appalling.
想到将要无所事事,他就非常害怕。
来源:《柯林斯高阶英汉双解学习词典》I was flicking idly through a newspaper while awaiting the arrival of orange juice and coffee.
我一边无所事事地翻着报纸,一边等着我点的橙汁和咖啡。
来源:《柯林斯高阶英汉双解学习词典》Some people are sitting around while others are doing all the work.
有些人坐着无所事事,而另一些人却在干所有的工作.
来源:《简明英汉词典》
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