volunteer

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