On clear nights we were spellbound by the strange flickering of the Northern lights in the sky.清朗的夜晚，我们出神地看着空中闪闪烁烁、神秘莫测的北极光。The shifting magnetic fields energize particles in the Earth's atmosphere and inflame the northern lights.不断转移的磁场使地球大气中的粒子能量增加，从而点亮了北极光。