volunteering的汉语意思

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