出口数字下降之后紧接着就是失业率上升的消息。
News of rising unemployment followed hard on the heels of falling export figures.
在点(1)处，紧跟在节点传播消息之前调用了用户出口。
At point (1), the user exit is invoked just before the node propagates the message.
用户出口对消息组装做出的任何更改都将对后续的用户出口可见。
Any changes made to the message assembly by a user exit will be visible to subsequent user exits.
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