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

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。

Defecography in normal volunteers: results and implications
The infectivity of Cryptosporidium parvum in healthy volunteers.
Hemodynamic and hormonal effects of human ghrelin in healthy volunteers
Selection of influenza virus mutants in experimentally infected volunteers treated with oseltamivir
Absorption of dietary quercetin glycosides and quercetin in healthy ileostomy volunteers.
Influence of piperine on the pharmacokinetics of curcumin in animals and human volunteers
Neuropsychologic correlates of MRI white matter hyperintensities: a study of 150 normal volunteers
Normal brain development and aging: quantitative analysis at in vivo MR imaging in healthy volunteers
The pharmacokinetics, pharmacodynamics, and safety of orally dosed INCB018424 phosphate in healthy volunteers.
Central nervous and cardiovascular effect of IV infusion of ropivacaine, bupivacaine and placebo of volunteers