Cách sử dụng
When we say someone has "disappeared" or "vanished off the face of the earth," we mean that they have disappeared completely and we have no idea where they are or what has happened to them. This expression is often used when someone suddenly stops communicating or when someone goes missing without a trace. It is an exaggeration to emphasize the severity of the situation. For example, "After his business failed, he disappeared off the face of the earth and we haven't heard from him since."