done, given, or acting of one's own free will
自愿的;志愿的
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we are funded by voluntary contributions .我们的资金来源于自愿捐赠。
working, done, or maintained without payment
无偿的;义务的
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a voluntary helper .义务的帮助者。
【生理】 随意的。
【律】 (让与)自愿的;无偿的。
an organ solo played before, during, or after a church service
(教堂礼拜仪式期间或前后的)管风琴独奏曲。
〈史〉 (尤指作为其他作品的序曲,或自由创作的)即兴曲;自由调。
(in a competition)a special performance left to the performer's choice
(比赛中的)自选表演。
"late Middle English: from Old French