dichotomies
n. 一分成二,對分( dichotomy的名詞複數 )
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.
學術界與工業界有著天壤之別。
The method of graded dichotomies enables this to be done.
用等級均分法可以做到上述那一點.