activity
英 [æk'tɪvɪtɪ]
美[æk'tɪviti]
- n. 活动；行动；活跃
英英释意
- 1. any specific activity;
- "they avoided all recreational activity"
- 2. the state of being active;
- "his sphere of activity"
- "he is out of action"
- 3. an organic process that takes place in the body;
- "respiratory activity"
- 4. (chemistry) the capacity of a substance to take part in a chemical reaction;
- "catalytic activity"
- 5. a process existing in or produced by nature (rather than by the intent of human beings);
- "the action of natural forces"
- "volcanic activity"
- 6. the trait of being active; moving or acting rapidly and energetically;
- "the level of activity declines with age"
