求翻译：不能接受对方的邀请时，应当对对方的邀请表示感谢，进而对不能接受邀请表示遗憾，同时还应简单地告诉对方不能应邀的原因是什么意思？

Can not accept each other's invitation, the invitation should be grateful for each other, and thus can not accept the invitation to express regret, but should simply not be invited to tell each other the reasons for

We cannot accept each other's invitation, the invitation should be on the other side, and thus to express gratitude expressed regret that we cannot accept the invitation, and at the same time it should be simple to tell each other cannot be invited to the reasons for

When cannot accept opposite party invitation, must express thanks to opposite party invitation, then to cannot accept the invitation to indicate regretted, meanwhile should tell opposite party not to be able simply on invitation reason

Cannot accept each other's invitation, thanks should be invited to each other, and thus cannot accept the invitation expressed regret that, while we should simply tell someone not invited to the reason

Cannot accepting invitation to should be expressed thanks for invitation to each other, regretted that cannot accept, also reasons should be simply tell someone not invited