世界是不是一个平面？这曾是持续千年的争论和探索，直到环球航行结束，麦哲伦的船队重新回到他们出发的起点，或者说，直到人类征服地球引力，遥望到这颗美丽蓝色星球的时候，人们才发现，世界并不是一个平面。而人...
The world is not a plane? This was continued for thousands of years to explore and debate until the end of the voyage around the world, Magellan's fleet back to the starting point of their departure, or that, until the conquest of Earth's gravity, to overlooking this beautiful blue planet when it was discovered , the world is not a plane. The people ...
