师生关系是学校中最重要的社会关系，也是教育研究中的重要范畴。

Teacher-student relation is not only the most important relationship in society, but also the important category in education research.

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医疗活动是当今一种基本的社会活动，医患关系已经成为普遍而重要的社会关系。

Medical activities are basic in modern society, and the relationship between medical establishment and sick men becomes universal and important.

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婚姻是人生的大事，家庭是社会的细胞，人们的婚姻家庭关系是最重要的社会关系之一。

The marriage is a major problem in one1 life, and the family is a cell of the society.

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