regret
/rɪˈgrɛt/
sadness associated with some wrong done or some disappointment
Chinese meaning: 遗憾；懊悔
She expressed deep regret for her harsh words during the argument.
她对争吵中的激烈言辞深表遗憾。
It is with great regret that I announce my resignation.
我怀着极大的遗憾宣布辞职。