activity就是名词。
n. 活动行动活跃It was a period of intense activity.
那是活动激烈的时期。
Parents encourage every activity imaginable.
父母鼓励一切可能的活动。
Economic activity often follows a cyclical pattern.
经济活动常常遵循周期性模式。
Does such an activity constitute a criminal offence?
难道这样的活动也算刑事犯罪吗
The test records the electrical activity of the brain.
这个测试显示出大脑的电流活动。
