Roughly 30,000 children and their parents from across the country were able to get tickets through the Internet for this year's White House Easter Egg Roll.

VOA: standard.2009.04.13

See this happens every semester that the chuckles, the grimaces, kind of roll through the crowd as people catch on, but there you go.

每学期学生们看到这，就会偷笑或者做鬼脸之类的，不过你们随意。

哈佛公开课 - 计算机科学课程节选