volunteering

v.

自动提供，自愿效劳( volunteer的现在分词 )；主动建议（或告诉）；（未经当事人同意）举荐；自愿参军，当志愿兵

volunteer services义工服务；志工服务台

1. He enlisted as a volunteer in the army.
   他以志愿兵从军。
2. He works as a volunteer at off time.
   在业余时间

1. He volunteered a statement to the police.
   他自动向警方供出情况。
2. Many people volunteer to work on the farms.
   许多人自动到农场劳动。
3. They volunteer for good causes.
   她们自愿做好事。

Volunteering
volunteering
Volunteering as Red Queen mechanism for cooperation in public goods games.
Volunteering and Mortality Among Older Adults: Findings From a National Sample
Neighbourly Acts--Volunteering, Social Capital and Democracy.
Differential benefits of volunteering across the life course.
Phase transitions and volunteering in spatial public goods games.
Volunteering and depression: the role of psychological and social resources in different age groups
Citizens as sensors: Web 2.0 and the volunteering of geographic information
Student Council, Volunteering, Basketball, or Marching Band: What Kind of Extracurricular Involvement Matters?