有了此信息后，我们可以进行迭代，尝试从第一个序列号开始接收组中的所有其他消息。
With this information, we then iterate, attempting to receive all of the other messages in the group in sequence order starting at the beginning.
如果接收到了组中的最后一条消息，则可以获取组标识符，并使用其序列号来确定组的大小。
If we receive the last message in a group, then we can obtain the group identifier and use its sequence number to determine the size of the group.
如果接收方的数据已发生具有更高序列号(或更新的时间戳)的更改，则较早的更改可能会被拒绝。
If the data at the receiving end has been modified by a change with a higher sequence number (or later timestamp), then the earlier change may be rejected.
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