这个模型将篡改授权数据的风险降至了最低，因此服务器不用花费大量的时间来验证数据了。

The model minimizes the risk of tampering with the authorization data so that servers do not spend more time in verifying the data.

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在这些系统中，密码是不断变化的，这会大大降低未授权访问的风险。

In these systems, the passwords are constantly altered, which greatly reduces the risk from an unauthorized intruder.

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然而我们开始意识到，认股权的授权会使公司巨头们承担超出股东们所预期的风险。

But we are beginning to realize that the grant of stock options may make corporate executives take more risks than the shareholders desire.

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