动词
中文翻译：使磁性消失
同义词：
['erase', 'nullify']
例句：
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1. The old key was so rusted that it couldn't open the lock anymore; I had to usea new one to "nullify" the old key's effect.
这把旧钥匙锈得很厉害，已经无法打开锁了，我不得不用一把新钥匙来“消磁”旧钥匙的效果。
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2. After the magnetic field was "nullified", the device could be used again.
在磁场被“消磁”之后，该设备可以再次使用。
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3.The magnetizer was designed to "nullify" any magnetic interference.
磁铁机的设计旨在消除任何磁性干扰。