And that's basically trying to make sure our program has not regressed, as to say, gone backwards in how well it works. And so we always test it on everything.

这只是从根本上确保,我们的程序并没往后退，也就是说在可用性方面倒退了,因此我们在任何东西上,都要进行这样的测试。

麻省理工公开课 - 计算机科学及编程导论课程节选

because all we konw now it's orange alert, the alert level has gone up or gone down We don't really know what it goes on behind the scene.

我们都知道现在是橙色警报，警戒线时高时低,我们真的不知道,事情背后是如何处理的。

普林斯顿公开课 - 国际座谈会课程节选

The third movie is Snow White, which I haven't gone out to see, but my 4-year old daughter has seen on 24 of the last 27 nights on video.

第三部《白雪公主》我还没有看过,但我4岁的女儿在27个晚上看了24遍

耶鲁公开课 - 博弈论课程节选