Tickets are available on a first come, first served basis.

票先来先买，售完为止。

《牛津词典》

Sign up is first-come, first-serve.

报名先到先得。

youdao

Is it just first come, first serve?

难道仅仅是先来先得么？

youdao

There are worries that the crisis could be the first of more to come in other parts of the world.

VOA: special.2009.12.04

Things can't become holy and can't come into contact with the holy or the sacred if they are not first pure.

事物不可能变得神圣或是与神圣有联系,如果它们连纯洁都算不上。

耶鲁公开课 - 旧约导论课程节选

It's the outcome of a race one's running faster than all of the other guys and it's as if to have a career at all one has no choice but to come in first.

这里讲的是一项竞赛的结果,某个人比其他所有人跑的都快,就好像这场竞赛中,除了第一你别无选择。

耶鲁公开课 - 弥尔顿课程节选

"It's first come first served the way I look at it, " Charles Sweeney said.

CNN: Technology - 'Cybersquatters:' Invading big names' domains

Should we have a system of first come first serve for healthcare?

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Employees would add their name to a whiteboard outside her office and communicate and collaborate with Mayer on a first-come first service basis.

FORBES: Marissa Mayer's 'Surprise' Work-From-Home Ban Isn't A Surprise To People Who Know Her