![Thejourneytothemoonhadbeenthefirststeptowardfutureexplo...]( "Thejourneytothemoonhadbeenthefirststeptowardfutureexplo...")
- 問題詳情：Thejourneytothemoonhadbeenthefirststeptowardfutureexploration(探險)inspace.ThedistancebetweentheMoonandEarthisveryshortindeedwhencomparedwiththedistancesbetweenEarthandtheotherplanets.Mars,thenearestplanettoEarthismillionsofmilesaway.Travelin...
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