- 問題詳情: RichardGraywasafamousexplorer(勘探者).HewasalsoahadvisitedeverycountryinthehadcrossedAntarctica,flownacrosstheAtlanticbyballoon,andclimbedMountyearhedecidedtowalkacrossDeathValley,thehottestplaceonwalkedfordaysoverthehotdesertnighthefoundth...
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