我们现在可以做以前不可能的事情，而且可以轻而易举地做成。

We can do things that were not possible before, and they can be done simply.

《柯林斯英汉双解大词典》

我们以前对待局势的心态不对。

We approached the situation in the wrong spirit.

《牛津词典》

我有一种奇怪的感觉，觉得我们以前见过面。

I had a peculiar feeling we'd met before.

《牛津词典》

As every time we introduce a new programming concept, we'll relate it back, as we have been doing consistently, to defensive programming.

我们每次介绍一个,新的编程概念的时候，就会和以前讲的联系起来，就和我们介绍防卫性程序设计一样。

麻省理工公开课 - 计算机科学及编程导论课程节选

And we can calculate that with the formula that we used, which was just n minus l minus 1 equals the number of nodes.

这个我们可以用我们以前用过的那个公式来计算，也就是节点数等于ｎ减去ｌ减去１

麻省理工公开课 - 化学原理课程节选

Those of you more comfortable, rest assured we'll start filling in some gaps before long if you're already familiar with this.

那些程度比较好的同学，我们马上来讲一下以前遗漏的问题,如果你们已经熟悉这门课，那会觉得那容易接受。

哈佛公开课 - 计算机科学课程节选