Cách sử dụng
The word 'unidentified' is used when we are not sure about the identity of a person or thing. For example, if we find a lost wallet on the street, we can say that it is an unidentified wallet since we don't know who it belongs to. Or if we see an object in the sky that we can't recognize, we could say it is an unidentified flying object or UFO. We use this word when we don't have enough information to identify something or someone.