如果有任何条目符合这一条件,我们就将它们添加到消息体中。
If any items satisfy this qualification, you add them to the body of the message.
规则集通过调用另一个服务产生输出(如果有),此服务可能与任何其他消息源关联,也可能不与任何其他消息源关联。
The rule set produces output -- if any -- by invoking another service, which may or may not be associated with any of the message sources.
如果代码中任何一处出现了使处理不能继续进行之类的错误,那么我们会检索系统错误消息(如果有的话),然后将它与我们自己的消息一起显示。
If at any point in the code, an error occurs such that processing cannot continue, we retrieve the system error message (if any), and display it along with our own message.
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