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 change自愿改变
voluntary intake自由采食量
voluntary school民办学校
voluntary ptosis随意性上睑下垂
voluntary victim自愿的被害人
voluntary muscle随意肌
voluntary answer自发答辩
voluntary labour义务劳动
voluntary office[法] 义务职
voluntary theory利益说