RichardGraywasafamousexplorer(勘探者)．Hewasalsoamillion...
问题详情： RichardGraywasafamousexplorer(勘探者)．HewasalsoahadvisitedeverycountryinthehadcrossedAntarctica，flownacrosstheAtlanticbyballoon，andclimbedMountyearhedecidedtowalkacrossDeathValley，thehottest...