領悟……1級2018-08-23 回答

regret having done sth。； regret a previous mistake：例句： If I‘d known then what was going to happen， I wouldn’t have done as I did。

早知今日，悔不當初。

匿名使用者1級2013-12-02 回答

Does regret going it in the first place

匿名使用者1級2013-09-11 回答

Regret at the beginning