The teaching of function of several variables is a difficult point in higher mathematics teaching.

求最值问题是中等数学永恒的话题，其中，多元函数求最值是难点。

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Through the investigation into the teaching of function concept, this paper has discussed a series of change and corresponding measures that new course standard brings.

本文通过对函数概念教学的研究，探讨了新课程标准带来的一系列变化及应对措施。

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Unfortunately, though health care is changing rapidly, traditional medical education focuses on teaching physicians to function solo, learning the details of diagnosing and intervening, but not so much the complexities of engaging disparate groups of clinicians, including nonphysicians, in common cause.

WSJ: The Experts: How to Improve Doctor-Patient Communication

But it was also a function of his Christian faith and his commitment to the vocation of teaching and writing.

CNN: Opinion: Author Achebe was a talent and a moralist