I have here that same ladder, and now what I will do is I will set the angle alpha not exactly at the critical point but a little lower, so that when I let it go, we'll all see that it will slide.
这是一个梯子，现在我要,使得角度α,不是恰等于临界点,而是略小一些，所以当我放手，我们会看到它下滑。
"There's nothing but Chinese hooks," Kevin says. "but I did see a ladder from Mexico that I want to come back for another time."
“除了中国的再没有了，”凯文说：“不过我看到一架墨西哥梯子，下次来我想买下来。”
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