为了确保只有亚马逊才能看到你的资料，每个编码都有一个密码锁，只有正确的密码才能开启。
To make sure no one but Amazon can view your info each code has a lock that can only be opened with the correct key, which Amazon has.
大多数人他们使用的所有账户都有一个或者两个密码。
Most people have one or two passwords that they use across all of their accounts.
客户需要在每一笔交易上都有一个单独的一次性密码。
The customers would need to generate a separate One Time Password for each IVR transaction.
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