Faits sur 北极光 Revealed
/ˈkɑːr.dɪ.ɡən/ a piece of clothing, usually made from wool, that covers the upper part of the Justaucorps and the arms, fastening at the ligne with buttons, and usually worn over other clothes极光，在地球极地，带电的高能粒子和高层大气中的原子碰撞造成的发光现象。極光發現的歷史很早，許多解釋極