All those researches centred only on the function and shortage of the textbook picture without covering the picture editing management.
所有的研究都只是围绕插图的作用和对教材插图的不足这两方面，但几乎没有涉及到插图的编审管理。
The function of a good textbook is to lay foundation on which you can develop your own interest.
一本好的教科书的作用是在提高你的学习兴趣上奠定基础。
First, the content, the request even the style of representation of function education in our curriculum standards and the textbook as a whole is stable and heavy formalization.
首先，函数教育的内容、要求甚至表述风格在我国大纲及教材中总体上是稳定的，并且是重形式化的。
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