Chapter One presents the definition, classification, functions and stylistic features of public signs.

第一章介绍公示语的定义、分类、功能及文本特点。

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First of all, it studies the definition, classification, characteristics and its life cycle.

首先对知识的定义、分类、特征和知识的生命周期进行了研究。

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First of all, starting from the vehicle route problem, we introduce its definition, classification, the variable, and some other relevant situations.

首先，从车辆路径问题入手，介绍它的定义，分类，变量，以及其他一些相关情况。

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The definition was changed in 1997 by the American Diabetes Association and WHO Expert Committee on the Diagnosis and Classification of Diabetes Mellitus.

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