Queen Elizabeth: We would love to, such a treat, but alas… a previous engagement. What a pity.

伊丽莎白王后：我们很乐意，盛情难却，不过……早有安排在先。甚为遗憾。

youdao

I regret to say (that) I have a previous engagement that evening. However, thank you FOR thinking of me.

很遗憾，那天晚上我另有约会。不过，我还是感谢您想到了我。

youdao

I am so sorry that I cannot come to the dinner you and Mrs. Lee are giving next Saturday for your brother because of a previous engagement that evening.

李先生：很抱歉我不能参加下周六您和李夫人为您兄弟举行的晚宴，因为那天晚上我恰巧有约在先。

youdao

I am so sorry that I cannot come to the dinner you and Mrs. Lee are giving next Saturday for your brother because of a previous engagement that evening.

李先生：很抱歉我不能参加下周六您和李夫人为您兄弟举行的晚宴，因为那天晚上我恰巧有约在先。

youdao