n.[C]

1. 自願參加者，志願者，義工[（+for）][（+to-v）]
   The volunteers for community service are doing a good job.

   社區服務的義工做得很出色。

2. 志願兵，義勇兵
   Many Australians fought as volunteers on the Allied side.

   許多澳大利亞人作為志願兵與盟軍一起戰鬥。

3. 自生植物

a.[B]

1. 自願參加的；自願的
2. 【植】自生自長的

vt.

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

   他們主動提出替老太太修繕房子。

2. 自願提供，自願給予
   She volunteered the information.

   她自動提供了這一消息。

vi.

1. 自願；自願服務[（+for）]
   He volunteered for the hard and unprofitable job.

   他自願做這苦差使。

2. 自願當兵[（+for）]
   When the war broke out, he volunteered for the Marine Corps.

   戰爭爆發時，他自願參加了海軍陸戰隊。

3. 【植】自生自長

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.