建造冰天的目的是阻挡地球受到太阳射线和其他穿越太阳系的危险的宇宙射线。
This was done to protect planet Earth from the radiation of the Sun and other dangerous cosmic radiation that regularly come through the solar system.
建造冰天的目的是阻挡地球受到太阳射线和其他穿越太阳系的危险的宇宙射线。
This was done to protect planet Earth from the radiation of the Sun and other dangerous cosmic radiation that regularly come through the solar system.
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