voluntarily

To make a decision to select something or someone by one's own will.

自愿参与

To take part in an activity or event by choice, without being forced.

通过选择参加活动或事件，而非被迫。

自愿加入

To become a member of a group or organization by one's own will.

凭自己的意愿成为团体或组织的成员。

自愿同意

To consent to do or accept something without coercion.

在没有胁迫的情况下同意做或接受某事。

自愿提交

To present something for consideration or to yield to authority by choice.

通过选择将某物提交审议或服从权威。

自愿返回

To come back to a place by one's own decision.

根据自己的决定回到一个地方。

自愿退出

To remove oneself from a situation or commitment by choice.

通过选择使自己脱离某种情况或承诺。

自愿进入

To join or become part of something by one's own choice.

出于自己的选择加入或成为某事的一部分。

To give oneself up or yield to an opponent or authority by choice.

自愿披露

To reveal information of one's own accord, without being required to.

主动透露信息，而无需被要求。

自愿交出

To willingly give up control or possession of something.

愿意地放弃对某物的控制或所有权。

自愿放弃

To leave or give up on something or someone by one's own choice.

出于自己的选择而离开或放弃某物或某人。