The magnet creates a field which changes the polarity of a tiny, tiny portion of the metal particles which coat each platter's surface.
这个磁体创建一个,能改变覆盖在,磁盘表面小金属粒子的磁极。
And it gives us an very nice analogy of somebody whose, you know, a coat which could outlast the owner, but it isn't immortal.
他给了我们一个很好的类比,某人的大衣可以,比它的主人存在更久,但它并不是不朽的。
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