Exception handling is a programming language construct designed to handle the occurrence of some condition (exception) that changes the normal flow of execution.

异常处理是一种编程语言构造，旨在处理某些更改常规执行流的情况(异常)。

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Although some rule engines allow for the or construct in a condition, in practice, such constructions lead to rules that are difficult to understand and test.

尽管某些规则引擎允许在条件中使用or结构，但在实践中，此类结构可能会导致难以理解和测试的规则。

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Construct condition: on land, utilizing the 5000 mu vegetable land and the exceptional environment conditions effectively in last years.

建设条件：土地方面，在近几年内，有效利用本辖区5000亩菜地资源和优越的环境条件。

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