![Thejourneytothemoonhadbeenthefirststeptowardfutureexplo...]( "Thejourneytothemoonhadbeenthefirststeptowardfutureexplo...")
- 问题详情：Thejourneytothemoonhadbeenthefirststeptowardfutureexploration(探险)inspace.ThedistancebetweentheMoonandEarthisveryshortindeedwhencomparedwiththedistancesbetweenEarthandtheotherplanets.Mars,thenearestplanettoEarthismillionsofmilesaway.Travelin...
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