Technically, this key doesn't directly encrypt your hard drive.

从技术上来讲，这个密钥不会直接加密你的硬盘驱动器。

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Instead, it encrypts the key that is used to encrypt your hard drive — that's how the software allows multiple keys.

相反，它加密的是那个用来加密你硬盘驱动器的密钥。这就是为何该软件允许有多个密钥。

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