dichotomies
n. 一分成二,对分( dichotomy的名词复数 )
If there is a dichotomy between two things, there is a very great difference or opposition between them.
There is a dichotomy between the academic world and the industrial world.
学术界与工业界有着天壤之别。
The method of graded dichotomies enables this to be done.
用等级均分法可以做到上述那一点.