自愿的,志愿的 (of a person or action) acting or done willingly, without being forced
[A] 义务的,无偿的 acting or done without payment; controlled or supported by people who give their money, services, etc., of their own free will
故意的,有意的 done on purpose
英英释义
Noun:
(military) a person who freely enlists for service
composition (often improvised) for a solo instrument (especially solo organ) and not a regular part of a religious service or musical performance
Adjective:
of your own free will or design; done by choice; not forced or compelled;
"man is a voluntary agent"
"participation was voluntary"
"voluntary manslaughter"
"voluntary generosity in times of disaster"
"voluntary social workers"
"a voluntary confession"
controlled by individual volition;
"voluntary motions"
"voluntary muscles"
voluntary的用法和样例：
例句
用作形容词 (adj.)
He made a voluntary statement to the police. 他自愿为警方作供。
Many social services are still provided by voluntary societies in our city. 在我们的城市，许多社会服务仍然是有志愿团体提供的。
We rely entirely on voluntary contribution. 我们全靠自愿捐赠。
She's very taken up with voluntary work at the moment. 她目前大部分时间和精力都用在志愿工作上了。
Although I'm retired, voluntary work keeps me in the swim (of things). 我虽已退休，但仍做些义务工作，以便了解当前的情势。
The organization is run on a voluntary basis. 这个组织是由志愿人员管理的.
