trilemma
noun [ C ] uk/traɪˈlem.ə/ /trɪˈlem.ə/ us/traɪˈlem.ə/ /trɪˈlem.ə/
三难困境;三难选择的窘境
a situation in which a difficult choice has to be made between three different things that you could do, or in which there are three difficult things that must be done
At this time the party faces a public policy trilemma. 此时，这个政党面临着公共政策的三难困境。