The expression comes from the idea——water has run over a dam and it can't be brought back again
问题描述：
The expression comes from the idea——water has run over a dam and it can't be brought back again
英语翻译
答
这个用语 来自于 水流过大坝不可能再回 的 概念.
相当于汉语 的 木已成舟.