Education or society tools such as counsels, explains, lectures, information promulgation etc.

教育或社会工具如忠告，解释，演讲，信息颁布等。

youdao

Education or society tools such as counsels, explains, lectures, information promulgation etc.

教育或社会工具如忠告，解释，演讲，信息颁布等。

youdao