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n.自愿的( voluntary的名词复数 )；志愿的；义务的；可控的 双语释义：adj.(形容词)自愿的,志愿的 (of a person or action) acting or done willingly, without being forced[A] 义务的,无偿的 acting or done without payment; controlled or supported by people who give their money, services, etc., of their ow
