正方形的东西方对角跨越国会大厦，和南北对角线跨越白宫。
The east-west diagonal of the square crosses over the Capitol building and the north-south diagonal crosses over the White House.
厨房里有个方形的东西，我经常发书进去，结果变成了一场小型的火灾。
There's a square thing in the kitchen that I just put books in it till there was a slight fire incident.
让我们认真思考一下：在自然界里你又看到多少正方形的或者盒子一样的东西呢？
Let's brainstorm for a moment: how many squares and boxes do you see in nature?
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