"We are prepared to go to Nigeria. We have been talking about Nigeria since two years ago when I came over here,"

VOA: standard.2009.10.22

If you look at the up left corner, Gabriel was a student here in this class two years ago, when we came and presented on the program and he is currently a student in the MAPP program.

看左上角，两年前，Gabriel修读这门课，在我们来推广硕士课程时,现在他正在我校读硕。

哈佛公开课 - 幸福课课程节选

Experts on language say the expression was born more than two hundred fifty years ago, when pirates sailed the seas, attacking and robbing trade ships.

VOA: special.2009.05.24

But when Suzuki ran for re-election two years ago, he ran into a problem a complicated election law that bans Internet use during the campaign season.

VOA: standard.2009.07.27