它的主要内容应该包括邀请的理由、活动的时间和地点等。

The main content should include the reason of invitation and place and time of activity, etc.

youdao

它的主要内容应该包括邀请的理由、活动的时间和地点等。

The main content should include the reason of invitation and place and time of activity, etc.

youdao