By the late nineteenth century, mathematicians began to conduct axiomatic study through abstracting the common features of a number of different concrete objects.
到了十九世纪末，数学家开始从众多不同的具体研究对象中抽象出它们的共同特征进行公理化研究。
Apart from the similarities with the common clothes, the study of leather garment comfort has its own features, for leather is a special kind of material.
皮革作为一种制作服装的特殊材料，与纺织产品舒适性的研究有相似之处，也有其自身的特点。
This essay is a study of cross century wriers as well as their common features which can be sammarized as 1)The wriers are intellectuals;
对跨世纪作家群进行研究，分析和评价其共同的特点：其作者是知识分子；
This essay is a study of cross century wriers as well as their common features which can be sammarized as 1)The wriers are intellectuals;
对跨世纪作家群进行研究，分析和评价其共同的特点：其作者是知识分子；
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