ASolar-poweredPlane---LowcarbonEarlierthismonth,asolar-...
问题详情：ASolar-poweredPlane---LowcarbonEarlierthismonth,asolar-powered(太阳能动力的)planecalledLowcarbontookofftotheskyforthefirsttime.Ithaspassedanimportanttestonthewaytotravelaroundtheworld.Lowcarbo...