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 opening device随意张开装置
voluntary acknowledgemnt[法] 任意认领
voluntary discontinuance[经] 自动中止诉讼程序
voluntary motor function随意运动功能
voluntary muscular tissue随意肌组织
voluntary eyebal movement随意性眼球运动
Voluntary Observing Ships志愿观察船