the strange feeling that in some way you have already experienced what is happening now

When I met her, I had a strange feeling of déjà vu. 我遇见她时有一种似曾相识的感觉。

disapproving The movie has a strong sense of déjà vu about it (= is similar to other movies and does not contain new ideas). 这部影片给人一种强烈的似曾相识的感觉。