mmmmmmmm离心率

In this username, “mmmmmmmm” may denote a long and heavy sigh, expressing feelings of weariness, disappointment or even despair. In Chinese high school education context, the '离心率'(eccentricity) is a concept that describes the shape of conic sections like ellipses and hyperbolas. It shows how stretched out they are from a circle, symbolizing deviation from perfection or normality in an artistic manner.