This is the last of the president's three commencement addresses this year, and his first at a military academy.

VOA: standard.2009.05.22

Like homework for me at the time was actually fun ; and there is some addictive about this; Tej and I even asked Tej during last year's final exam period.

对我而言就像当时做功课一样,但是真的有趣，我有点上瘾了;,在去年的期末考试期间我还请教过。

哈佛公开课 - 计算机科学课程节选

This is a course, a version of which I've taught almost every year for the last twenty years and it evolves a little bit every year.

诚如你们所见,在过去二十年中,几乎每年我都要讲授这门课,这门课程每年都会与时俱进

耶鲁公开课 - 生物医学工程探索课程节选

He notes this is an increase of 33 percent over the same period last year.

VOA: standard.2009.09.01

So this is perhaps a site that some of you have spent way too much time on last year, if not in the past week or so, com this is isawyouharvard.com.

很多同学去年的时候,在这个网站上花费了很多时间，可能上周还玩了，这个网站的网址是isawyouharvard。

哈佛公开课 - 计算机科学课程节选

On Memorial Day,the day Americans remember the fallen, the president or vice president traditionally lays a wreath at the Tomb of the Unknown - this is the scene from last year.

VOA: standard.2010.05.26