volunteers
n.
义务工作者( volunteer的名词复数 );
志愿者;
自告奋勇者;
主动做某事的人;
v.
自动提供，自愿效劳( volunteer的第三人称单数 );
主动建议（或告诉）;
（未经当事人同意）举荐;
自愿参军，当志愿兵;
例句:
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Volunteers constitute more than 95% of The Center's work force.
该中心95%以上的工作人员是志愿者.
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The volunteers kept a record of everything they ate for a week.
志愿者记录下他们一周所吃的所有食物。
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Volunteers receive £21 pocket money each week, accommodation and expenses.
志愿者每周领到21英镑的零用钱，免费住宿，还得到一笔生活费。
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She now volunteers at a youth club called X-ray.
来自BBC
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Many of the campers are volunteers at the Olympics.
来自VOA
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Yet the volunteers never felt an increase in pain.
来自NEWYORKER