名词

1. 古怪
Eccentricity is unusual behaviour that other people consider strange.

2. 古怪行为(或想法);怪癖
Eccentricities are ways of behaving that people think are strange, or habits or opinions that are different from those of most people.

1. strange and unconventional behavior

2. a circularity that has a different center or deviates from a circular path

3. (geometry) a ratio describing the shape of a conic section
the ratio of the distance between the foci to the length of the major axis

e.g. a circle is an ellipse with zero eccentricity