They can also produce beautiful auroras.
不过，美丽的极光也可能形成于此。
See pictures of the unusual auroras.
图见picturesoftheunusual auroras。
Few auroras show this level of detail.
很少有极光能达到如此清晰的程度。
Explanation: Will it be curtains for one of these auroras?
说明： 上图中哪一束极光可以被归类成“帘幕”？
The cusp is responsible for the famous auroras that grace high latitudes.
“尖端”结构是形成著名的极光的原因，而极光的出现让高纬度的地区更加明亮。
On Earth, auroras appear over an area about as large as the United States.
在地球上，能看到极光的地区在面积上大约和美国相当。
The auroras were unexpected because the initiating Sun has been unusually quiet of late.
极光的出现难以预计，因为最近太阳异常平静。
The auroras were unexpected because the initiating Sun has been unusually quiet of late.
极光的出现难以预计，因为最近太阳异常平静。
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