I took part in the voluntary activities organised by the school.

我参加了学校组织的志愿者活动。

youdao

We need better mechanisms to encourage and support voluntary activities.

我们需要更好的机制来鼓励和支持志愿活动。

youdao

Education Sector in blood donation within the school health education activities, mobilization of teachers and students to participate in school-age healthy voluntary blood donation.

教育部门将在各学校内进行无偿献血健康宣教活动，动员适龄健康师生参与无偿献血。

youdao

The union urged members to temporarily stop coaching sports and limit other voluntary activities.

WSJ: Training Teachers to Embrace Reform

They say the national industrial action is not a work-to-rule because members are being encouraged to do and are still doing voluntary activities, such as leading clubs in their own time after school.

BBC: Teachers strike over protest pay stoppage

The US scheme took off in New York under its Mayor Michael Bloomberg, who provided support and resources to the London scheme, which will see the public and private sector and voluntary organisations coordinating community activities.

BBC: London scheme launched to find 10,000 volunteers