draw in〔pull in〕 one's horns
减少,收敛reduce the amount of one's activities, spending, etc.
After the business failed, he had to draw in his horns pretty sharply.买卖失败后,他不得不大大地削减生活开支。
on the horns of a dilemma
进退两难having to choose between two unpleasant things or courses of action
I am on the horns of a dilemma about the matter.这件事使我进退两难。