活动有一个摘要、描述、开始时间和结束时间。
Events have a summary, a description, a start time and an end time.
一次性的一组活动，它具有明确的开始时间和结束时间。
A one-time-only set of activities that has a definite beginning and ending point in time.
一次性的一组活动，它具有明确的开始时间和结束时间。
A one-time-only set of activities that has a definite beginning and ending point in time.
应用推荐