名词
中文翻译：无活动
同义词：
['idleness', 'inertia']
例句：
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1.The elderly man has been sitting inactivity for hours.
那位老人已经坐在那里一动不动几个小时了。
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2.The lack of exercise leads to a state of inactivity.
缺乏锻炼会导致一种不活跃的状态。
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3.The team was inactive during the game due to injuries.
由于受伤，球队在比赛中表现不活跃。