*vol·un·ta·ry/`vɑlənˏtɛrɪ; ˈvɒləntəri/ adj 1 working without being paid, especially to help people 〔尤指帮助别人〕义务的，无偿的; 志愿的: voluntary work 义务工作 voluntary organizations 志愿组织 2 something that is voluntary is done because you want to do it, not because someone says you must do it 自愿的，自发的: voluntary contributions 自发的捐款