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ac·tiv·i·ty AHD[ăk-tĭvʹĭ-tē] D.J.[ækˈtɪvɪtiː]K.K.[ækˈtɪvɪti]n.（名词）pl. ac.tiv.i.ties 【复数】- The state of being active.活动：活动的状态
- Energetic action or movement; liveliness.活跃，敏捷：充满精力的行为或行动；活泼
- A specified pursuit in which a person partakes.特殊活动：一个人参加的特殊的消遣活动
- An educational process or procedure intended to stimulate learning through actual experience.教育活动：通过实际经验旨在刺激学习的教育过程或步骤
- The intensity of a radioactive source.放射性：放射原的强度
- The ability to take part in a chemical reaction.活性，活度：参加化学反应的性能
- A physiological process:正常运动：一种生理过程：respiratory activity.呼吸运动
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