Cách sử dụng
The word 'subterranean' means something that exists or happens underground or below the surface of the earth. It is often used to describe things like tunnels, caves, or basements. For example, if someone says "There is a subterranean river beneath the city," they mean that there is a river flowing underground. Another example might be "The scientist discovered a subterranean ecosystem deep in the cave system," which means that the scientist found a hidden ecosystem beneath the surface.