volunteer

volunteer
noun
  1. 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
  1. ■[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
  1. late 16th cent. (as a noun, with military reference): from French volontaire 'voluntary'. The change in the ending was due to association with -eer
英语宝典
考试词汇表