No matter how hard he trided, he could not understand higher mathematics.
不论他如何努力，他就是无法弄懂高等数学。
No matter how hard he tried, he just could not understand higher mathematics.
不论他如何努力，他就是无法弄懂高等数学。
Teaching and scientific research are independent as well as inseparable in higher mathematics.
《高等数学》教学与科研是一对矛盾的两个方面，它们既相互对立又相互依赖。
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。
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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