北极光The Aurora Borealis. 北极的光The Northern Lights. 这些大气层的光经常到达峰值These atmospheric light shows often reach their peak 就像地球的轨道一样just as the Earths orbit 使北半球旋转原来的背向太阳swings the northern hemisphere back towards the sun. 这标志着一个转变的时刻,It marks a ...