back the wrong horse
US /bæk ðə rɔŋ hɔrs/
UK /bæk ðə rɔŋ hɔrs/

1.
押错宝, 支持错误的人或事
to support a person or thing that is not successful or that turns out to be a bad choice
:
•
I really backed the wrong horse when I invested all my savings in that failing company.
我把所有积蓄都投到那家失败的公司,真是押错了宝。
•
Many critics felt the director had backed the wrong horse with his experimental film.
许多评论家认为导演的实验电影是押错了宝。