a person who freely offers to take part in an enterprise or undertake a task 志愿者 ■a person who works for an organization without being paid 自愿无偿服务者 ■a person who freely enrols for military service rather than being conscripted, especially a member of a force formed by voluntary enrolment and distinct from the regular army 志愿兵 ■a plant that has not been deliberately planted 自生植物 ■(Law)a person to whom a voluntary conveyance or deposition is made (律)无因受益人;自愿者
verb
■[no obj.]freely offer to do something 自愿 140 men and women volunteered for redundancy. 140个男子和女子自愿下岗。 [with infinitive]I rashly volunteered to be a contestant. 我草率地主动提出参加竞赛。 ■[with obj.]offer (help) in such a way 主动提供(帮助) he volunteered his services as a driver for the convoy. 他自愿为车队当司机。 ■[reporting verb]say or suggest something without being asked 主动说出(或建议) [with obj.]it never paid to volunteer information. 主动提供信息向来都是不值得的。 [with direct speech]‘Her name's Louise,’ Christina volunteered. “她叫路易丝,”克里斯蒂娜主动说道。 ■work for an organization without being paid 自愿无偿服务 ■[with obj.]commit (someone) to a particular undertaking, typically without consulting them (尤指未经协商)使(某人)承担某事 he was volunteered for parachute training by friends. 朋友代他承诺参加跳伞训练。
语源
late 16th cent. (as a noun, with military reference): from French volontaire 'voluntary'. The change in the ending was due to association with -eer