Alternative way of creating a primary key and foreign key.

另外一种创建主键和外键的方式。

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With PGP and other public-key encryption methods, there's no way to deduce someone's private key from the public key.

对于PGP和其他公钥加密方法，不存在从公钥推断某人私钥的方法。

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When the compressed data in encrypted way is transmitted by using SVPN, it can be divided into two parts: key information and assistant information and only the key information needs to be encrypted.

在SVPN中加密传输压缩数据时，为了减少SVPN网关的加密计算量，可以把压缩数据本身分为关键信息和辅助信息两类，只对关键信息进行加密传输。

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Google keeps its search formula under a lock and key the same way Coca Cola safeguards its recipe.

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The Conservative Party in particular has heralded Mr Lewis' methods as a model for the future, and a key way to help confront the recent spate of knife and gun murders in London.

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For example, its Windows 8 Start key provides a quick and easy way to get back to your Start Screen, while the App Switching function key allows you to quickly switch among your open apps.

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