The military's casualty figures say The official figures say Israel Defense Forces spokesman Captain Elie Isaacson says the military used overt and covert intelligence sources to gather its casualty statistics.

VOA: standard.2009.09.09

So the enrollment numbers are in and we thought we would share some statistics, as we like to do in this course; being computer scientists, we tend to gather lots of data.

登记加入我们的人数在这里,并且我们觉得我们能分享一些统计资料，我们在这次课程中也喜欢这么做，作为计算机科学家，我们要收集很多数据。

哈佛公开课 - 计算机科学课程节选