They do these tasks without payment.

他们做这些工作没有报酬。

youdao

Licensees are free to make copies of open source software and are free to distribute those copies without payment of royalties to a licensor.

被许可方可以自由复制开放源码软件，并可以自由发布这些副本，无需向许可方支付版税。

youdao

Licensees are free to create derivative works of open source software and are free to distribute those works without payment of royalties to a licensor.

被许可方可以自由地创建开放源码软件的派生作品，并可以自由发布这些作品，无需向许可方支付版税。

youdao

The center offers services to people in need, without requiring payment.

VOA: special.2009.01.28

Turay teaches without a salary, accepting instead offers of rice and farm-labor as payment.

VOA: standard.2010.02.25

Airlines will have to hold all reservations for at least 24 hours at the quoted fare, without payment.

BBC: US strengthens airline passenger rights

Asensio says he has settled six other lawsuits without payment or admitting fault.

FORBES: Short Story

For the hundreds of interns currently working in Parliament without payment, changes to the system could not come soon enough.

BBC: Are MPs' interns being exploited?