活动可以用英文 "activity" 来表示。比如:1.I'm planning an activity to go hiking in the mountains this weekend.

我计划周末去山上徒步旅行。

2.Our activity schedule is packed with a variety of activities such as yoga,meditation,and cooking classes.

我们的活动日程安排得很满，包括瑜伽、冥想和烹饪课程等。