树中每个节点前的复选框控制元素的启用状态。
The check box before each node in the tree controls the enabling state of the element.
如场景5中一样，我们需要在将原始消息传递给Timeout Control节点前得到一个计时器请求消息。
As in Scenario 5, we need to make a timer request message before passing the original message to a TimeoutControl node.
消息流中的前三个节点与连接到发布WSDL文档的Internet URL有关。
The first three nodes in the message flow are concerned with contacting the Internet URL where the WSDL document is published.
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