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原来地球轨道并不是圆形的，而是螺旋的
原来地球轨道并不是圆形的，而是螺旋的
天文科普视频，一看就懂系列16/17
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App01:44
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App04:19打开App观看
原来地球轨道并不是圆形的，而是螺旋的
App08:54App01:35App03:32App03:14App07:36App01:22App03:00App05:20App02:12App06:11App06:57App01:33App06:01App01:44App01:24App01:11App04:19
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