It's easy, once you've got the knack.

你一旦掌握这个技能就容易了。

《牛津词典》

Any escape, once it's detected, sets off the alarm.

逃跑一旦被侦察到，就会触发警报。

《柯林斯英汉双解大词典》

I enjoyed school enormously once I'd settled in.

一旦适应了，我就非常喜欢上学了。

《柯林斯英汉双解大词典》

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

And once you... when you're having that bad of a season, it's really hard to get everyone passionate about it,

所以一旦赛季取得很差的成绩，就很难保持球队的激情，

足球部队长的领导力 - SpeakingMax英语口语达人

Then, once you've done that, once you have secured the integrity and accuracy of the meaning, Hirsch says, "Okay, fine.

在你完成那个之后，一旦你确定了意思的真实性和准确性，赫施说，好的，不错。

耶鲁公开课 - 文学理论导论课程节选