How dare you enter my private quarters without invitation.

竟然没我邀请 擅闯我私人领地。

They were always dropping by, usually without invitation.

【invitation】他们常常来串门，通常不请自来。

If they had not asked me, I would no more have intruded on them than I'd have gone to the mess at the barracks without invitation'.

如果他们不问我，我就不会打扰他们，就像我不会未经邀请就去军营的食堂一样。”

He gave a drink to Dumbledore, who had sat down without invitation, thrust the tray at Harry, and then sank into the cushions of the repaired sofa and a disgruntled silence.

他递了一杯给已经坐下来的邓布利多，又把托盘朝哈利面前一推，然后便坐进那张刚刚修复的沙发上的一堆软垫里，板着脸陷入了沉默。