在以下示例中，使用echo命令将拒绝消息发送给被拒绝的客户端。
In the following example, the echo command is used to put a denial messages up to a denied client.
当这种故障发生时，相应的拒绝消息通过嵌套的活动(第37至40行)被发送给客户。
When this fault occurs, a corresponding rejection message is sent to the customer via the nested activity (lines 37 to 40).
他拒绝透露任何关于那个男人下落的消息。
He refused to divulge any information regarding the man's whereabouts.
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