Thus in EAI, "integration" includes both semantic and non-semantic actions, and an "integration layer" can perform both.
因此，在EAI中“集成”包括语义和非语义操作，“集成层”可以执行这两类操作。
In SOA, as in mature EAI, separation of concerns is key, and thus an "integration layer" in SOA might perform both semantic and non-semantic actions, but must keep them separate architecturally.
与成熟的EAI一样，在SOA中关注点隔离是关键，因此soa中的“集成层”可以执行语义和非语义这两类操作，但是必须在架构层面上把它们隔离开。
Backtracking and semantic actions do not mix well.
回溯和语义动作混用不是太好。
The first approach is to delay all semantic actions until the whole parse tree is constructed.
第一种做法是延迟所有语意动作，直到建立完整的剖析树。
Typically, we store temporary variables, generated by our semantic actions, in our closure variables, as a means to pass information up and down the recursive descent.
典型地，我们在闭包里储存由我们的语义动作产生的临时变量，以之作为在递归下降中向上或向下传递信息的方法。
Typically, we store temporary variables, generated by our semantic actions, in our closure variables, as a means to pass information up and down the recursive descent.
典型地，我们在闭包里储存由我们的语义动作产生的临时变量，以之作为在递归下降中向上或向下传递信息的方法。
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