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1. Atoms could be repelled by sunlight, sufficient extent to account for the long comet tails we observe.
   原子会受到太阳光的斥力作用，其程度足以形成我们所观测到的很长的彗尾。
2. Reports even have the tail visible just above the horizon after sunset for many northern observers as well.
   由许多北半球的观测报告指出，在太阳下山后的地平线附近也可以看得到彗尾。