当建筑物倒塌时，它形成了一个三角形，救了我们。
When the building fell down, it made a triangle, and it saved us.
你会发现在一座倒塌的建筑中，三角形是最普遍形状，到处都是。
It is the most common shape, you will see, in a collapsed building. They are everywhere.
你会发现在一座倒塌的建筑中，三角形是最普遍形状，到处都是。
It is the most common shape, you will see, in a collapsed building. They are everywhere.
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