on the horns of a dilemma
US /ɑːn ðə hɔːrnz əv ə dɪˈlɛmə/
UK /ɑːn ðə hɔːrnz əv ə dɪˈlɛmə/

1.
左右为难, 进退两难
faced with a choice between two equally undesirable alternatives
:
•
She was on the horns of a dilemma, as both options would lead to negative consequences.
她左右为难,因为两个选择都会导致负面后果。
•
The company found itself on the horns of a dilemma: either lay off employees or face bankruptcy.
公司左右为难:要么裁员,要么面临破产。