The society decided on(upon)a lecture series and appointed a committeeman to determine the dates, etc.

一系列的联谊活动，座谈会，汉语课程和专题讲座。

youdao

The society decided on(upon)a lecture series and appointed a committeeman to determine the dates, etc.

一系列的联谊活动，座谈会，汉语课程和专题讲座。

youdao