这两年，象两个山头似的出现在这以前的几年和这以后的几年之间。

These two years rise like two mountains midway between those which precede and those which follow them.

youdao

看到你现在这样，就像看到以前的我。

Look at you, I see my past life.

youdao

那么，在这些有特定目而制造的跑鞋发明以前，人们如何让跑步变得舒适呢？

So how did humans manage to run comfortably before the invention of purpose-built footwear?

youdao

We're exposed to things that might cause cancer where weren't exposed to them before and so that might be a reason.

我们暴露于可能致癌的物质中,这些物质在以前是没有的,这可能就是原因之一

耶鲁公开课 - 生物医学工程探索课程节选

from what I did in Los Angeles and what I'm doing here.

这是从我以前在洛杉矶的生活和现在在这里的生活来看。

旧金山和洛杉矶的差异 - SpeakingMax英语口语达人

For instance in the past, we had that silly little program for computing the average of some quizzes and it was actually a pretty bad implementation because I had essentially hard coded in the number of quizzes.

比如在以前，我们做了一个,计算平均数的程序,这是一个相当挫的实现,因为我硬编码了测试的数字。

哈佛公开课 - 计算机科学课程节选