back the wrong horse

例句：

1. 1.He backed the wrong horse and lost his job.
   他支持了错误的一方，结果丢了工作。
2. 2.The company backtracked on its decision, but it was too late to correct the wrong horse.
   公司撤回了决定，但为时已晚，无法纠正错误。
3. 3. She backed the wrong horse in her argument, leading to a heated debate.
   她在争论中支持了错误的观点，引发了一场激烈的辩论。