And so you'll find in the reading of pointer to plots, and it will tell you everything you need to know, all of the wizardry and the magic you can put in these strings that tell you how to do things.
所以你可以，在通过指向plot的指针的读数，它会告诉你你想知道的一切，在这些字符串中，你可以加上各种魔法，去告诉你怎样做事情。
A pointer helps with control because instead of just using your eyes, you can physically move your hand to adjust your reading speed.
阅读时使用指针可以帮你很好地控制速度。
You Can define the excessive speed of a motor-car in terms of a pointer reading on a speedometer. But Can you define excessive noise in the same way?
你可以根据一个速度表上指针的读数来定义一辆机动车的超速，但是你可以用这种方法来定义噪音超标吗？
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