一旦我们的服务对他们没了用，我们就是可消耗的了。

Once our services cease to be useful to them, we're expendable.

《柯林斯英汉双解大词典》

那么，一旦我们同居了，为何我们中的许多人就觉得有必要结婚呢？

So, once we have cohabited, why do many of us feel the need to get married?

《柯林斯英汉双解大词典》

但一旦我们弄清楚它是什么，就重建它。

But once we figured out what it was and reconstructed it.

youdao

So it's a really powerful and simple formalism, once we set up what is needed the go through it, right?

因此这是一种很强大而简单的形式,一旦我们定下需要什么,就可以推导出它，对吧？

麻省理工公开课 - 热力学与动力学课程节选

Once we have those classrooms, the stuffing cost is to be designed to be the same as what we currently use in personal physics.

一旦我们建成这些教室，其他的人员成本应该,和现在投入到物理教学,所用的成本一致。

麻省理工公开课 - 媒体、教育、市场课程节选

But as soon as we hope to find that guerdon, the golden ring, ! comes the blind Fury with the abhorred shears -- ouch!

但是一旦我们想要找到这奖赏，这金戒指，它会带着剪刀暴怒而至--哎唷！

耶鲁公开课 - 弥尔顿课程节选