There are thousands of virtual points in the sky that pilots follow on their route, each with unique names so the air-traffic controllers can tell us where to go and how to get there.

在空中飞行员按照数以千计的虚拟点构成的路径驾驶飞机，其中每个点都有自己的名字，这样空中交通管制才能告诉我们到哪里，怎么走。

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That is no earth shattering news as we as consumers rely on signs to tell us where we are, where we want to go and how to get there, among other things.

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