However, this can be very tricky in practice, because the BPMN notation is really a lot richer than what BPEL supports, so a complex translation layer occurs.
然而，在实际运用中，它是非常复杂的，因为BPMN支持的符号比BPEL支持的更丰富，因此一个复杂的转换层就出现了。
The second problem is that it is very difficult to express a wide range of complex policies using this notation.
第二个问题是使用这种表示法表达许多复杂的策略非常困难。
The non-mathematical appear to have their revenge, as the perils of over-reliance on complex symbolic notation and arcane formulae are relentlessly exposed.
非定量学科似乎有了个扬眉吐气的机会——过度依赖复杂符号和晦涩公式的危险这回算是暴露无遗了。
This enabled the Mesopotamians to do complex computations that would have been difficult in any other ancient system of numerical notation.
这使得美索不达米亚人能够用数学符号去做出一些复杂的计算，而对于其他古时代的人们来说这是非常困难的。
The grammars for complex languages are commonly described using BNF (Backus-Naur Form) notation or its close relative, EBNF (Extended BNF).
复杂语言的语法通常都是使用BNF（巴科斯-诺尔范式，Backus-NaurForm）表示法或者其“近亲”―EBNF（扩展的 BNF）描述的。
The grammars for complex languages are commonly described using BNF (Backus-Naur Form) notation or its close relative, EBNF (Extended BNF).
复杂语言的语法通常都是使用BNF（巴科斯-诺尔范式，Backus-NaurForm）表示法或者其“近亲”―EBNF（扩展的 BNF）描述的。
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