这位几何学家在做完一个关于自己研究的演讲后对他说：“你知道吗，我总是觉得代数很恐怖”。
He said: 'You know, I have always been dreadful at arithmetic.'
例如，数学老师或者数学系有2个代数课程和两个几何课程。
For example, a math teacher or department has 2 algebra and 2 geometry courses.
例如，数学老师或者数学系有2个代数课程和两个几何课程。
For example, a math teacher or department has 2 algebra and 2 geometry courses.
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