这条信息表示主板或计算机其它硬件做技术性替换后，向系统输入新序列号信息时失败。
It indicates that a technician replaced the system board or component but failed to input the new serial number in the system.
为此，我们将在每个迭代上设置一个新使用者，以根据组标识符和所需的序列号进行选择。
We achieve this by setting up a new consumer on each iteration that selects based on the group identifier and sequence number that we require.
任意键通常只是一个序列号，当需要一个新键时，就分配下一个可用的号码。
An arbitrary key is usually just a sequential number, where the next available number is assigned when a new key is required.
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