dichotomy
/daɪˈkɔtəmɪ; daɪ`kɑtəmɪ/ n
~ (between A and B) (fml 文) separation into or between two groups or things that are opposed, entirely different, etc 一分为二; 二分; 二分法
the dichotomy between peace and war 和平与战争之一分为二
They set up a false dichotomy between working and raising a family, ie wrongly claim that one cannot do both. 他们错误地把工作与养育儿女两者对立起来.