In this paper, the changes of terminology, concepts and definitions are described. The reasons for the changes, the influences on classical astrometry are discussed.

据此，对天体测量学的术语、概念和定义的变化作了描述，并讨论了变化的原因和对天体测量学的影响。

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To meet these changes, more has been carried out in this field for new study of traditional ideas and classical research approaches, and the new idea of planning and design has been introduced.

为了适应这些变化，旅游规划界对传统的规划思想和经典的研究方法不断重新认识，并引入新的规划设计理念。

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In accordance with the changes of recent years, this essay put forward some new concepts such as the classical literature, post literature, post literature era and post literature society.

针对这些年来所发生的文学“泛化”的现象变迁，本文首次提出了“经典文学”、“后文学”、“后文学时代”和“后文学社会”的概念。

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Robbins also created a tax calculator and neo-classical economic model that make it possible to estimate the economic and revenue effects of changes to the tax code based upon how those changes alter the cost of capital and labor.

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