对本文研究的对象小众图书进行定义和界定，以区别相关概念。
The object of this paper, the books in the definition of minority and define, to distinguish between related concepts.
李明珠的文章也显示了另一个由谷物价格引发的理论问题，即如何定义和界定市场。
Another theoretical problem raised by the grain price data, also illustrated in Li's article, is that of how to define and identify markets.
定义与分类是按照事物的自然和社会的客观属性加以人为的主观界定。
Definition and classification according to the natural and social objective attributes to define subjectively by human.
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