後悔的英文：
to regret; to repent

regret是什么意思：
n. 遗憾，后悔
v. 为...感到遗憾；表示抱歉

regret rushed decisions
对贸然做出的决定感到懊悔

It is the order of nature, and regret is useless.
这是自然的法则，悲叹惋惜是无用的。

I regret my mistake.
我为自己所犯错误感到懊悔。

He felt a flicker of regret.
他突然闪现一丝悔意。

He regretted his roughness.
他对自己的粗鲁感到后悔。

repent是什么意思：
v. 对感到懊悔或忏悔

In repentance, there is salvation.
苦海无边，回头是岸。

From confession flows repentance and from repentance forgiveness.

Never too late to repent
过则勿惮改

Short acquaintance brings repentance.
浅交生后悔。

Depend on others and you always repent
依靠别人总要后悔