风的方向在不断地变。
但是问题是，在哪个方向上它变的最快呢？
But, the question is, in which direction does it change the most quickly?
如果有一只鸟转变了方向或改变的速度，那么其他所有的鸟都跟了一起变。
If any one bird turned and changed speed, so would all the others.
上层建筑要怎么变，朝什么方向变，不是能简单说清楚的。
It's not easy to say exactly how superstructures will change, and in what direction.
上层建筑要怎么变，朝什么方向变，不是能简单说清楚的。
It's not easy to say exactly how superstructures will change, and in what direction.
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