draw in _ horns
口语·表示收敛或变得谨慎
例句
After losing a lot of money, he decided to draw in his horns and invest more carefully.
典故来源
源自蜗牛或蜗牛类动物遇到危险时将触角缩回壳中，比喻人收敛行为或变得谨慎。