Once you can see it and once you can step back from it, then you can also decide, "This pass is my filter. This pass is my constraint.

一旦你看到了它，一旦你能退一步思考它，你就能决定，这么走可以去伪存真，这么走会遇到困难。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

If you make Jell-o and you make it right, then once it's set or gelled, it has mechanical properties.

如果你用正确方法做出了吉露果冻,它一旦凉下来定了型,就有了机械性能

耶鲁公开课 - 生物医学工程探索课程节选

It takes an int; deal with it when you get to it and then once you look through the whole file, should you find -- ultimately find the actual code that defines or impliments this thing.

它携带一个int数，当你获得了它就处理它,然后一旦你查看整个文件，最终你将发现实际代码中,定义或执行了这个东西。

哈佛公开课 - 计算机科学课程节选

But, once you get beyond n equals one, 2s2 2p6 3s2 3s6 it's always 2s2, 2p6, 3s2, 3s6.

但是，一旦你让n大于，它就总是。

麻省理工公开课 - 固态化学导论课程节选

Well in C and other languages that we'll see this semester, you use what's called the for loop, and this as syntax isn't quite as straightforward but once you know what to look for, it's very easy to understand.

在C语言和一些我们这学期将要接触的编程语言中，你将会用到所谓的for循环，也许作为一种语法规则，它看起来不是那么的通俗易懂,但是你一旦知道曲中奥妙，就不难理解了。

哈佛公开课 - 计算机科学课程节选