Think, for example, about the view from the window of a high-speed train. Objects on the horizon are clearer in our vision, whereas objects nearer the track are more blurred.
这就像是从高速列车往车窗外看，远处地平线的风景清晰可见，但窗前的物体却模糊一片。
As they come under one horizon, they shout their warning to get off the track to the other, heard sometimes through the circles of two towns.
它们是在同一个地平线上的，它们彼此发出警告，要别个在轨道上让开，呼唤之声有时候两个村镇都能听到。
As they come under one horizon, they shout their warning to get off the track to the other, heard sometimes through the circles of two towns.
它们是在同一个地平线上的，它们彼此发出警告，要别个在轨道上让开，呼唤之声有时候两个村镇都能听到。
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