On April twenty-second, nineteen seventy, environmental activists organized the first ever Earth Day.

VOA: special.2010.01.17

I'm going to go away from studying imperfect competition and go back and visit something we studied almost the first day or maybe the second day, and that election.

我将放下不完全竞争,而是返回去讲我们几乎是第一天,或者是第二天学习的一些内容,就是选举

耶鲁公开课 - 博弈论课程节选

In fact, when I first started attending law school, a friend of mine came up to me after the second day of class,

事实上，当我第一次进入法律学校时，第二天下课后一个朋友过来找我，

在上西区 - SpeakingMax英语口语达人

And what you will give me in return is on the first day, one cent-- one penny; on the second day, two cents; third day, 4 cents... Every day, twice as much as the previous day, starting with one.

你们给我的是，第一天，一分钱;,第二天，二分钱，第三天，四分钱。,每天给我前一天的两倍钱，从一分钱开始。

哈佛公开课 - 幸福课课程节选