名词
中文翻译：活动水平
同义词：
['activity', 'activity level', 'energy level', 'intensitylevel']
例句：
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1. The team's performance has significantly improved since thenew coach took over.
自从新教练上任以来，团队的表现有显著提高。
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2. Thestudent's activity level has increased afterparticipating in sports activities.
学生参加体育活动后，活跃度有所提高。
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3. The researcher found that the activity level of thepopulation had decreased due to the pandemic.
研究者发现，由于疫情，人口的活跃度有所下降。