对别人真诚地致歉往往能赢得别人的尊重，磊落的胸怀是快乐人生的源泉。

I sincerely apologize to others are often able to win the respect of others, candid mind is the source of happy life.

youdao

请接受我最真诚的致歉……

Please accept my sincerest and deepest apology for…

youdao

尊敬的王先生：首先，我们非常遗憾发生这件事情并真诚向您致歉。

Dear Mr Wong: At first, we are very sorry to it's happen and apologize for it.

youdao