volunteern.志愿者;(自行生长的)植物v.(自愿)做
volunteer time every week每周志愿抽出时间
Volunteer Militia Regiment志愿民兵团
volunteer for special duty自告奋勇
volunteer prisoners of war志愿军战俘
volunteering blood donation无偿献血
volunteer carers/helpers义务护理者;无偿援助者
Volunteer Management System志愿人员管理制度
Volunteer Military Rejecter拒绝接收的志愿兵