憾事

a matter of regret; pity

1. 你示接受弗雷德的主动表示确实是一件憾事，但事已过去，难以挽回，你自责也于事无补。
   It's a pity you didn't accept Fred's offer, but it's useless to reproach yourself now. It's all water under the bridge.

事的英语翻译：