What are the properties of sails?

The water network system composed of all rivers, lakes and other water bodies in the basin is called water system. Among them, the water that finally flows into the ocean is called outflow water system, such as Pacific water system and Arctic water system; When water finally flows into inland lakes or disappears into deserts, it is called internal water system. To determine the watershed area, we can tick the watershed line according to the topographic map, and then find out the area surrounded by the watershed line.

A brief introduction to the story of "Searle"

In order to solve the energy crisis of the earth, Sail has been entrusted with the mission of finding new energy sources in space. It has delivered valuable cosmic data and clean energy to the earth in one task after another, and now the protagonist SPT team will embark on a new adventure. Where will their next destination be?

During the voyage, the sail was blocked by an enchantment called ice. In order to open the enchantment, SPT Vanguard came to Snow Star, where it will encounter a mysterious snow monster. There is a magnet on the huge Xiong Xing, which records the real mystery of endless energy. In order to prevent pirates from getting the first move, Sail assembled the God of War Alliance, and they met their mysterious ultimate opponent.