英语语法分析

Moving rapidly through school, he graduated Phi Beta Kappa from the University of Kentucky at age 18.

在学校进步迅速，他十八岁时以优等生身份从肯塔基大学毕业。

《柯林斯英汉双解大词典》

That's phi is the angle downwards from the z axis.

这个角度是φ，它是从z轴偏转的角度。

So, there's two ways to draw the letter phi, by the way.

其实，这个字母有两种书写方式。