voluntary act自愿行为
voluntaryadj.自愿的;志愿的n.(教堂礼拜仪式前后或进行期间的)乐器独奏
voluntary tree-planting day义务植树日
voluntary counseling and test自愿咨询检测
voluntary surrender of tenancy自愿放弃租住权
voluntary compliance agreement自愿协议
voluntary restriction of export自动限制出口
Voluntary smoke-free policies自愿禁烟政策
voluntary enhanced exit program自愿放弃提高计划
Voluntary consultation and test自愿咨询检测者