MAD的志愿者在经过培训后，每周只需花两个小时来教书或是帮忙组织活动和项目。

After MAD volunteers are trained, they only have to spend 2 hours a week teaching or helping to organize events and programs.

youdao

MAD的志愿者在经过培训后，每周只需花两个小时来教书或是帮忙组织活动和项目。

After MAD volunteers are trained, they only have to spend 2 hours a week teaching or helping to organize events and programs.

youdao