亡羊补牢的英语怎么说

亡羊补牢的英语是 "to close the stable door after the horse has bolted"。这个说法来源于英国一个谚语，原文是 "to lock the stable door after the horse is stolen"。这个说法用来描述在事情发生后才采取行动，而不是预防事情发生。例句如下：
"It's too late to change the plan now, we're just locking the stable door after the horse has bolted." (现在改变计划已经太迟了，我们只是在马逃跑后才关上马厩门。)
"The company is implementing new safety measures after the accident, but they should have thought of that before." (公司在事故发生后实施了新的安全措施，但他们应该在之前就想到这一点。)
在上面的例句中，"the horse has bolted" 指的是马逃跑了，而 "to lock the stable door" 指的是关上马厩门。所以这个说法形象地描述了在事情发生后才采取行动，而不是预防事情发生。