![Mostofthetime,thegroundfeelssolidbeneathourfeet.That'...]( "Mostofthetime,thegroundfeelssolidbeneathourfeet.That'...")
- 问题详情： Mostofthetime,thegroundfeelssolidbeneathourfeet.That'scomforting.Butit'salsomisleadingbecausethere'sactuallyalotgoingonunderground.Massesofland(calledplates)slip,slide,andbumpagainsteachother,slowlychangingtheshapeofcontinentsandoceans...
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