Aircraft can avoid each other by changing course to left or right.
飞机可以通过或右或左改变航线来避免相互碰撞。
We must adjust ourselves to the changing society unless we want to be left behind.
如果我们不想落后，我们就必须适应这个不断变化的社会。
We must adjust ourselves to the changing society unless we want to be left behind.
如果我们不想落后，我们就必须适应这个不断变化的社会。
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