Prior engagement? And you want me to offend it?

有约在先吗？你想让我再反驳你吗？

Tell them this, I'm unable to attend because I have a prior engagement.

告诉他们，我参加不了，因为我有约在先。

She spoke to Henry Tilney on the subject, regretting his brother's evident partiality for Miss Thorpe, and entreating him to make known her prior engagement.

她和亨利·蒂尔尼谈了这个话题，对他哥哥明显偏爱索普小姐感到遗憾，并恳求他让她知道她之前的婚约。

" It would be so easy to tell Miss Tilney that you had just been reminded of a prior engagement, and must only beg to put off the walk till Tuesday" .

“很容易告诉蒂尔尼小姐，您刚刚被提醒有一个事先约定，并且必须请求将步行推迟到星期二”。

Told her you had sent me to say that, having just recollected a prior engagement of going to Clifton with us tomorrow, you could not have the pleasure of walking with her till Tuesday.

告诉她你让我这么说，刚刚想起明天和我们一起去克利夫顿的事先约定，你要到星期二才能有幸和她一起散步。