这就说明，一旦一个士兵受伤了，他与其他来帮助他的人就不再是敌人了。

This lays down that once a soldier is wounded he and everyone else who comes to his help ceases to be an enemy.

youdao

盟军部队明天开始演习，来展示一旦发生新的入侵，军队能以多快的速度集结起来。

Allied troops begin manoeuvres tomorrow to show how quickly forces could be mobilized in case of a new invasion.

《柯林斯英汉双解大词典》

一旦人类拥有了这样的头脑，他们就能够找到一个富有想象力的解决方案来应对严重的经济危机，比如前面所描述的农业困境。

Once humans possessed such a mind, they were able to find an imaginative solution to a situation of severe economic crisis such as the farming dilemma described earlier.

youdao

All right. So let's look at some of these wave functions and make sure that we know how to name all of them in terms of orbitals and not just in terms of their numbers.

好，让我们来看一下,这些波函数,并确定我们都知道,怎么用轨道,而不仅是量子数来命名它们,一旦我们可以命名它们。

麻省理工公开课 - 化学原理课程节选

Once you hear that description, it's easy to write the code, in fact. This is a place where the recursive version of it is much easier to think about than the iterative one.

实际上一旦你听到了大致描述,就能很轻松的写出代码来,在这一点上应用递归来解决问题,比用迭代要容易理解多了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Once you've got that, then you come back.

一旦你们找到了,就要回到这里来

耶鲁公开课 - 基础物理课程节选