合作是三者中最高等级的活动。

Collaboration is the higher level activity.

youdao

通常，察看等级越高，活动的星表越多。

As a general rule, the higher the view level, the more catalogs become "active".

youdao

通常，察看等级越高，活动的星表越多。

As a general rule, the higher the view level, the more catalogs become "active".

youdao