The Earth is one of the eight planets in the solar system. The Earth rotates from west to east and revolves around the sun. It is 4.0 to 4.6 billion years old. Among so many planet...

Sometimes there are some strange phenomena in the world, such as the mirage tower, etc. However, due to the narrow worldview of the ancients, there are many unsolved mysteries. Dre...

Entering the ground can be directly understood as drilling into the ground. Sometimes it is used to describe a person who is very ashamed, implying that he has done something shame...