[ADJ 形容词]自愿的；志愿的；主动的；自发的Voluntary actions or activities are done because someone chooses to do them and not because they have been forced to do them.
Attention is drawn to a special voluntary course in Commercial French...
一门特别的商务法语选修课引起了大家的关注。
The scheme, due to begin next month, will be voluntary.
定于下个月开始实施的方案是自愿性质的。
voluntarily
I would only leave here voluntarily if there was a big chance to work abroad.
只有当国外有非常好的工作机会时，我才会主动离开这里。
2
[ADJ 形容词]（工作）无偿的，义务性的Voluntary work is done by people who are not paid for it, but who do it because they want to do it.
[usu ADJ n]
In her spare time she does voluntary work...
她在业余时间做义工。
He'd been working at the local hostel for the handicapped on a voluntary basis.
他曾在当地的残疾人救助站当过义工。
3
[ADJ 形容词]（工作者）志愿的，无偿服务的 A voluntary worker is someone who does work without being paid for it, because they want to do it.
[usu ADJ n]
Apna Arts has achieved more with voluntary workers in three years than most organisations with paid workers have achieved in ten...
“我们”艺术中心依靠志愿者在3年内取得的成就超过了大多数雇用受薪员工的机构10年中取得的成绩。
We depend solely upon our voluntary helpers.
我们完全依靠我们的志愿者。
4
[ADJ 形容词]（机构或组织）志愿的，义务性的 A voluntary organization is controlled and organized by the people who have chosen to work for it, often without being paid, rather than receiving help or money from the government.
[ADJ n]
Some local authorities and voluntary organizations also run workshops for disabled people...
一些当地机构和志愿组织也为残疾人开设了一些工场。
It has been largely through the voluntary sector that the needs of victims have been met.
受害者的需要主要是通过志愿组织予以满足的。
...a voluntary hostel for ex-offenders.
为出狱囚犯义务提供的宿舍
Oxford
vol·un·taryAWL/ˈvɒləntri; NAmEˈvɑːlənteri/
adjective
,
noun
voluntaryvoluntariesadjective1done willingly, not because you are forced 自愿的；志愿的；主动的；自告奋勇的◆a voluntary agreement自愿协议◆Attendance on the course is purely voluntary.听这门课纯粹是自愿的。◆to pay voluntary contributionsinto a pension fund 自愿向退休基金交款◆( BrE) He took voluntary redundancy.他选择了自愿裁汰。OPP
compulsory
2[usually before noun ](of work 工作)done by people who choose to do it without being paid 自愿性的；无偿的；义务性的◆I do some voluntary workat the local hospital. 我在当地医院从事一些义务性工作。◆She works there on a voluntary basis.她自愿在那里无偿工作。◆voluntary services/bodies/agencies/organizations(= organized, controlled or supported by people who choose to do this and are usually not paid)义务性服务╱团体╱机构╱组织◆the voluntary sector(= organizations which are set up to help people and which do not make a profit, for example charities)志愿机构3[only before noun ](of a person 人)doing a job without wanting to be paid for it 自愿的；志愿的；义务的；自发的◆a voluntary worker志愿工作者4( technical 术语) (of movements of the body 人体活动)that you can control 随意的；可以控制的OPP
involuntary
noun(pluralvol·un·taries)a piece of music played before, during or after a church service, usually on an organ 仪式终始曲，即兴曲（通常用风琴在教堂礼拜仪式前后或期间演奏）vol·un·tary/ˈvɒləntri; NAmEˈvɑːlənteri/
1a) voluntary organization/association/agency etc an organization etc that is organized or supported by people who give their money, services etc because they want to and who do not intend to make a profit → volunteer: a voluntary organization providing help for the elderly environmental work carried out by the voluntary sectorb)voluntary work/service etc work etc that is done by people who do it because they want to, and who are not paid: She does a lot of voluntary work for the Red Cross. a drop-in centre for homeless people, run on a voluntary basis2done willingly and without being forced: Workers are being encouraged to take voluntary redundancy. →
compulsory
3technical voluntary movements of your body are controlled by your conscious mindOPP involuntaryCOLLOCATIONSnounsa voluntary organization/group/body/agency· The day care scheme was run by a voluntary organization.the voluntary sector (=voluntary work and the people involved in it)· What is the role of the voluntary sector in sport?voluntary work/service· He does voluntary work with young offenders.phraseson a voluntary basis· Guide and Scout leaders work on a voluntary basis.