asolar的精选

问题详情：Earlierthismonth, asolar-powered(太阳能动力的)planetookofftotheskyforthefirsttime.Ithadpassedanimportanttestonthe   waytotravelaroundtheworld.                       ...

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