n.[C]

1. 自愿参加者，志愿者[（+for）][（+to-v）]
   The volunteers for community service are doing a good job.

   社区服务的志愿者做得很出色。

2. 志愿兵，义勇兵
   Many Australians fought as volunteers on the Allied side.

   许多澳大利亚人作为志愿兵与盟军一起战斗。

3. 自生植物

a.[B]

1. 自愿参加的；自愿的
2. 【植】自生自长的

vt.

1. 自愿（做）[（+to-v）]
   They volunteered to repair the house for the old lady.

   他们主动提出替老太太修缮房子。

2. 自愿提供，自愿给予
   She volunteered the information.

   她自动提供了这一消息。

vi.

1. 自愿；自愿服务[（+for）]
   He volunteered for the hard and unprofitable job.

   他自愿做这苦差使。

2. 自愿当兵[（+for）]
   When the war broke out, he volunteered for the Marine Corps.

   战争爆发时，他自愿参加了海军陆战队。

3. 【植】自生自长

n.

1. a person who freely offers to do something.
   ▸a person who freely enrols for military service rather than being conscripted.
2. a person who works for an organization without being paid.
3. a plant that has not been deliberately planted.
4. Law  a person to whom a voluntary conveyance or disposition is made.

v.

1. freely offer to do something.
   ▸commit (someone) to an undertaking without consulting them.
2. say or suggest something without being asked.
3. work for an organization without being paid.