In the crowd exercise and ideological reform, In practice, study and control theory.

在群众中锻炼和改造思想，在实践中学习和掌握理论。

youdao

In the crowd exercise and ideological reform, In practice, study and control theory.

在群众中锻炼和改造思想，在实践中学习和掌握理论。

youdao