Good question, so there is this little reading head kind of like in an old phonograph player that does move back and forth and in and out depending on the implementation.

好问题，这就像,老留声机里的小读头,它通过来回移动,来完成不同的操作。

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And success, as a fourteen years-old squash player, was the most important thing in my life.

成功对14岁的壁球手来说，是我生命中最重要的东西。

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