原文翻译
10. Privacy
The traditional banking model achieves a level of privacy by limiting access to information to the parties involved and the trusted third party. The necessity to announce all transactions publicly precludes this method, but privacy can still be maintained by breaking the flow of information in another place: by keeping public keys anonymous. The public can see that someone is sending an amount to someone else, but without information linking the transaction to anyone. This is similar to the level of information released by stock exchanges, where the time and size of individual trades, the "tape", is made public, but without telling who the parties were.
As an additional firewall, a new key pair should be used for each transaction to keep them from being linked to a common owner. Some linking is still unavoidable with multi-input transactions, which necessarily reveal that their inputs were owned by the same owner. The risk is that if the owner of a key is revealed, linking could reveal other transactions that belonged to the same owner.
10.隐私
传统的银行模型通过对相关方和可行第三方限制信息实现了一定程度的隐私保护。公开宣布所有交易的方式排除了这种方法的必要性，但通过打破另一个地方的信息流依然可以保证一定程度的隐私。通过保持公钥匿名，公众可以看到某人正在向某个其他人发送交易，却没有将交易链接到任何人的信息。这和证券交易所发布的信息水平很类似，储存时间和每个交易的大小的“磁带”，是公开的，但不会告诉你这些相关方是谁。
The risk is that if the owner of a key is revealed, linking could reveal other transactions that belonged to the same owner.作为外加的防火墙，应对每个交易使用新的密钥对以防止它们与公共所有者链接。在有多个输入的情况下，一些链接依旧是不可避免的，这必然表明他们的投入归同一所有者所有。这样做的风险在于如果钥匙的所有者被揭露，链接可以揭示属于同一所有者的其他交易。
细节解读
《Bitcoin: A Peer-to-Peer Electronic Cash System》论文原文地址如下：https://bitcoin.org/bitcoin.pdf
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