“This is a useful little spell, ” he told the class over his shoulder.

“这是句有用的小咒语，”他回过头来对全班学生说。

If you've adopted size classes, flexible layouts, and default storyboards over the last few years, then you're actually already done.

如果你在过去几年中采用了size classes、灵活分层和默认故事板，那么你实际上已经完成了。

And I didn't realize it, I ran our class five times over some budget.

而且我没有意识到，我在一些预算上跑了五次我们的班级。