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1. Oxford American Dictionary

   Olduvai Gorge

   • IPA[ˌôldəˌvī ˈɡôrj]

   美式

   • ph.
     a gorge in northern Tanzania, 30 miles (48 km) long and up to 300 feet (90 m) deep. The exposed strata contain numerous fossils (especially hominids) spanning the full range of the Pleistocene period.