It is caused by the reflection of sunlight from ice crystals and is most often observed at sunrise or sunset when the sun is low to the horizon.
这是由地球大气层顶部冰晶体折射太阳光而形成的,观测时间一般为日出或日落时,即太阳接近地面时。
And beyond all this, miles away, was the sea, and beyond the sea the sky, full of clouds which were just turning rose colour with the reflection of the sunset.
那边几英里以外是大海,大海以外是天空,落日映照下满是玫瑰色的云层。
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