- 问题详情:NewdatafromNASA'sCuriosityroverindicateMarsCrateronceheldanenormouslake.Thisdiscoverysuggeststhattheredplanetmayhavebeenmuchwetterthanscientiststhoughtandraisesthepossibilitythattheplanetwasoncehabitable.“Thesizeofthelakeandthelengthoftimea...
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