This was in the early 1970s when many schools were going through remarkable changes.

那是在上世纪70年代早期,当时很多学校都在经历巨大的变化。

普林斯顿公开课 - 人性课程节选

We're in a time period where the economy has changed dramatically in the last few years.

我们现在所处的时期在前几年经历了巨大的经济变化。

现在的商业新闻 - SpeakingMax英语口语达人

If we had this sort of progressive all-radical alteration, not just minimal alteration, but radical alterations of my memory, my beliefs, my desires, my tastes.

如果我们持续经历剧烈变化，不只是最小的变化，而是自己的记忆，信仰，渴望，品味都发生剧烈变化。

耶鲁公开课 - 死亡课程节选

That happens, and if I was looking at a region of membrane that was experiencing an action potential I would see voltage change in just the way it's shown in this graph here.

当去极化发生时,如果我观察一个经历动作电位的区域,我就会看到这样的电压变化,就像这幅图上展示的一样

耶鲁公开课 - 生物医学工程探索课程节选