By the way, unions have not been able to give through the political process except through voluntary contributions forever.

顺便说一句，工会无法一直通过政治进程做出贡献，除非永远通过自愿捐款。

All the money has been raised by voluntary contribution.

【contribution】所有这些钱都是靠自愿捐献筹集的。

If you find you have missing years, a common problem for freelancers, you can pay to top them up known as a voluntary contribution.

如果您发现自己缺少年限， 这是自由职业者的常见问题，您可以付费补足这些年限， 这被称为自愿捐款。

Tithes are unknown among them; and their clergy, who are far from being numerous, are maintained either by moderate stipends, or by the voluntary contributions of the people.

什一税在他们中间是未知的； 他们的神职人员人数远非众多， 而是靠适度的津贴或人民的自愿捐款维持生计。

And the depth of that relationship was reflected most recently by the historic pledge to extend our lead as the institution that makes the largest annual voluntary financial contribution of any U.S. college or university to its home city.

最近，耶鲁大学和纽黑文市之间的一项历史性承诺更加印证了二者深刻的联系，也让耶鲁大学保持成为全美向所在城市提供年度自愿捐款最多的大学。