RichardGraywasafamousexplorer(勘探者)．Hewasalsoamillion...
問題詳情： RichardGraywasafamousexplorer(勘探者)．HewasalsoahadvisitedeverycountryinthehadcrossedAntarctica，flownacrosstheAtlanticbyballoon，andclimbedMountyearhedecidedtowalkacrossDeathValley，thehottest...