volunteern.志愿者；(自行生长的)植物v.(自愿)做Volunteer Reserve Decoration志愿后备队勋带volunteer action among youth青年志愿活动Volunteer Reenlistment Bonus对志愿再应征人员之奖励金volunteer in the undertaking志愿参加这项事业Volunteer Information Program志愿兵信息计划Volunteer Port Security Force港口志愿警戒部队Volunteer Field Representative志愿战地代表Volunteer Air Reserve Training空军志愿后备队训练volunteering for rural support扶贫支教Volunteer Marine Corps Reserve海军陆战队志愿后备队