[mass noun]the condition in which things are happening or being done
(事情发生或发展的)状况
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there has been a sustained level of activity in the economy.
经济方面一直保持着一定的活跃水平。
busy or vigorous action or movement
(忙碌或积极的)行为,行动
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the room was a hive of activity .房间里热闹非凡。
(一般作
活动
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the firm's marketing activities. 公司的市场营销活动。
a recreational pursuit or pastime
娱乐休闲活动
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a range of sporting activities. 一系列体育活动。
(
(一团体为达成目的而采取的)行动
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the police were investigating communist activities. 警方正在调查共产党的活动。
the degree to which something displays its characteristic property or behaviour
活性
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abnormal liver enzyme activities. 异常肝酶活性。
【化】 热力活性,活度。
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after-school activities / free time activities 课外/空闲活动
真题例句:
"late Middle English: from French