“极夜”是个多义词，它可以指极夜（流行歌曲）, 极夜（自然现象）, 极夜（网络奇幻小说）, 极夜（摇滚歌曲）。
很快北国疆土就会被极夜的寒冷所吞没。
Soon the northern lands will be locked in the cold of the polar night.
这种差别使得卫星能够获取整年的海冰记录，除非出现云层遮蔽或极夜的月份。
This difference allows the satellite to capture a year-round sea ice record, despite cloud cover and months of polar night.
它有一面一直是面向红矮星，因此处于永恒的白昼，而另一面则处于极夜状态。
One side of the planet always faces its star and basks in perpetual daylight, while the other is in perpetual darkness.
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