The time taken for this round-trip of request and acknowledgment determines the network's latency.
就是因为这种往返的要求和回应，导致了网络的延迟。
Although unlikely, it is possible that the RPC server will die just after sending us the answer, but before sending an acknowledgment message for the request.
尽管几率很小，可还是有可能??RPC服务在给我们发送完响应后宕掉，但还没来得进行消息确认。
However, you can request that an acknowledgment message be sent if a delivery failure prevents a message from arriving in the queue.
不过，您可以请求在传递失败妨碍了消息到达队列时发送一条确认消息。
The sending application can request a negative acknowledgment message be returned to the sending application if a message was rejected.
如果讯息被拒绝，传送的应用程序可以要求传回负认可讯息至传送的应用程序。
The sending application can request that a negative acknowledgment message be returned in such a case.
发送应用程序可请求在此情况下返回否定的确认消息。
The sending application can request that a negative acknowledgment message be returned in such a case.
发送应用程序可请求在此情况下返回否定的确认消息。
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