Déjà vu

既視感,是人類在現實環境中(相對於夢境),突然感到自己「曾於某處親歷某過畫面或者經歷一些事情」的感覺。
Déjà vu is the experience of feeling sure that one has witnessed or experienced a new situation previously (an individual feels as though an event has already happened or has happened in the recent past), although the exact circumstances of the previous encounter are uncertain.