而探测器在沙地上移动时，声音就会较小。
所说的‘滚石’最初指的一定就是它们。这些石块一直在沙地上移动，我不相信任何人能够100%地揭开这个谜团。
'they must be the original real-life Rolling Stones, they just keep moving through the sand and I don't believe anyone has really 100 per cent worked it out yet.
榆林沙区地处毛乌素沙地的东南部，属毛乌素沙地向东南移动的最活跃地段。
The sand area in Yulin lies in the southeast of the Maowusu desert, which is the most active region, where the Maowusu desert migrates to the southeast.
说，当沙地上的片状冰融化，岩石会由于冰和风力的原因向前移动，这样就形成了它自行移动的路线。
As the sand melts Prof Reid said that the rocks were moved along by the ice and wind, thus forming the patterns.
说，当沙地上的片状冰融化，岩石会由于冰和风力的原因向前移动，这样就形成了它自行移动的路线。
As the sand melts Prof Reid said that the rocks were moved along by the ice and wind, thus forming the patterns.
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