Leaving the doors unlocked is an open invitation to burglars.
出門不上鎖無異于開門揖盜。
She had wangled an invitation to the opening night.
她弄到了一張首映之夜的請柬。
Admission is by invitation only.
憑請柬入場。
I accepted the invitation thankfully.
我愉快地接受了邀請。
She graciously accepted our invitation.
她落落大方地接受了我們的邀請。