vol·un·teer /ˌvɑlənˈtɪr/
 志願者(a.)志願的(vt.)(vi.)自願
 Vol·un·teer, v. t. [imp. & p. p. Volunteered p. pr. & vb. n. Volunteering.] To offer or bestow voluntarily, or without solicitation or compulsion; as, to volunteer one's services.
 Vol·un·teer, a. Of or pertaining to a volunteer or volunteers; consisting of volunteers; voluntary; as, volunteer companies; volunteer advice.
 Vol·un·teer n.
 1. One who enters into, or offers for, any service of his own free will.
 2. Mil. One who enters into service voluntarily, but who, when in service, is subject to discipline and regulations like other soldiers; -- opposed to conscript; specifically, a voluntary member of the organized militia of a country as distinguished from the standing army.
 3. Law A grantee in a voluntary conveyance; one to whom a conveyance is made without valuable consideration; a party, other than a wife or child of the grantor, to whom, or for whose benefit, a voluntary conveyance is made.
 Vol·un·teer, v. i. To enter into, or offer for, any service of one's own free will, without solicitation or compulsion; as, he volunteered in that undertaking.
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 volunteer
      adj : without payment; "the soup kitchen was run primarily by
            unpaid helpers"; "a volunteer fire department" [syn: unpaid,
             volunteer(a)]
      n 1: (military) a person who freely enlists for service [syn: military
           volunteer, voluntary] [ant: draftee]
      2: a person who performs voluntary work [syn: unpaid worker]
      v 1: tell voluntarily; "He volunteered the information"
      2: agree freely; "She volunteered to drive the old lady home";
         "I offered to help with the dishes but the hostess would
         not hear of it" [syn: offer]
      3: do volunteer work