Have you ever been doing something and, suddenly, you get this strange feeling that you've seen or heard before? Although you know you' re seeing or hearing is happening right now for the first time, you still feel that it ( happen) before.
Most people feel this way from time to time. There's special name for this feeling. It is called déjà vu, which means" already seen" in French.
Experiencing déjà vu is a strong sense(感觉) of ( remember) something. But the facts of this experience ( be) often very unclear.
Most people who experience the feeling of déjà vu believe the familiar situation might appear in their ( dream). Sometimes they are very sure of that.
Is déjà vu a ( six) sense into the future or the past? Not likely! Researchers believe the feeling of déjà vu is most likely just a joke our brains(大脑) play us. The joke makes us ( think) that an experience we' re having now is being remembered rather than happening right now.
