Analysis on semen quality of 694 sperm donors;
供精自愿者精液筛查结果分析
A person who renders aid, performs a service, or assumes an obligation voluntarily.
自愿者自愿给予帮助、进行服务或履行义务的人
the soup kitchen was prmarily by unpaid helpers; a volunteer fire department.
厨房主要是自愿帮助者建立起来的；由自愿者组成的火警部门。
I need a volunteer to polish the drums for tomorrow.
我要一个自愿者擦鼓为明天做准备
The subjects also reported that the drink tasted less bitter to them.
这些自愿者也表示，对他们来说饮料没有那么苦。
When we asked for volunteers, many young men came forth.
当我们征求自愿者时,许多年轻人站了出来。
When we ask for volunteer, many young men come forth.
当我们徵求自愿者时，许多年轻人站了出来。
Voluntary Fund for Victims of Torture
酷刑受害者自愿基金
a volunteer in a contest
自愿报名参加比赛者
Volunteers swelled the ranks of the marchers.
自愿人员的加入扩大了游行者的队伍。
The organizing committee are appealing for volunteers to step forward.
组织委员会号召志愿者自告奋勇。
She also wants a voluntary register for past donors.
她还希望过去的捐献者自愿登记。
The organizing committee be appealing for volunteer to step forward
组织委员会号召志愿者自告奋勇
Such study should be on a voluntary basis.
工商业者的学习，应当以自愿为基
A call for volunteers was sent out, but very few people responded.
号召自愿参加，但响应者寥寥无几。
Voluntary Fund for the Victims of Contemporary Slavery
援助当代奴隶制受害者自愿基金
United Nations Voluntary Fund for Victims of Torture
联合国援助酷刑受害者自愿基金
The organizing committee is appealing for volunteers to step forward.
组织委员会号召志愿者自告奋勇.
He volunteered as a correspondent for the war.
他自愿担任作报道这次战争的记者。