/dɪˈlemə ||; dəˈlɛmə/noun [C] a situation in which you have to make a difficult choice between two or more things 进退两难；左右为难；进退维谷: Doctors face a moral dilemmaof when to keep patients alive artificially and when to let them die. 医生们都面对着一个道德上的两难困境，即什么时候该用人工方法维持病人的生命，什么时候该让他们死去。to be in a dilemma 处于进退两难的境地