The geographical school wall map is a most necessary direct sighed teaching aid in the process of middle school.

中学地理教学挂图是中学地理教学过程中一个必不少的直观教具。

youdao

The geographical school wall map is a most necessary direct sighed teaching aid in the process of middle school.

中学地理教学挂图是中学地理教学过程中一个必不少的直观教具。

youdao