经典 发表于 2025-3-28 16:32:13
10楼Panther 发表于 2025-3-28 22:27:42
Introduction, visible messanger in the form of lave from the depths of the earth. This belief in a central fire was continued throughout the middle ages. Not until Descartes was the development of the earth considered from the standpoint of mechanics. He compared the earth with the stars and tried to deduce