)activity
活跃, 活动性, 行动, 行为, [核]放射性1. any specific behavior
2. the state of being active
同义词：action, activeness
3. an organic process that takes place in the body
同义词：bodily process, body process, bodily function
4. (chemistry) the capacity of a substance to take part in a chemical reaction
5. a process existing in or produced by nature (rather than by the intent of human beings)
同义词：natural process, natural action, action
6. the trait of being active; moving or acting rapidly and energetically
同义词：activeness
- 习惯用语
- be in activity 在活动中
- with activity 精力充沛地
