A: The usage stats are based only on randomly-rolled, legendary weapons. Q: Can you explain the letter ranks that are given based je these stats?木星的極光。在左邊遠方的亮點是埃歐場線的終點；在圖片底部的斑點是甘尼米德和歐羅巴北极光是指常出现于地球高纬度地区高层大气中的发光现象，是�