I'm just curious, just you know, 3 years ago, I think we had an outdoor action trip.

我很好奇，三年前，我参加了一个户外远足活动。

普林斯顿公开课 - 人性课程节选

It was not even like that three years ago, which I think is a really bad mistake.

三年前还不是这样，这次我觉得真的错得很离谱。

纽约的公共交通 - SpeakingMax英语口语达人

After decades of relatively unspectacular growth, compared to the east Asian economies, India's economy suddenly took off three or four years ago, growing at 8% or more a year.

经历了几十年的相对高速发展后，与其他东亚经济体相比，印度经济三或四年前突然开始腾飞,以每年8%甚至超过%,8%的速度增长。

普林斯顿公开课 - 国际座谈会课程节选