Unit 5 Into the unknown预习新知早知道1234abandoncivilisationburycanalruinexpansiondismiss5civilisationhas been buried6abandonAstronomycanalruinexpansiondismiss7civilisationruinousabandoned8accuracyExpansionismcomparisondismissalaccurately9奥秘神秘所笼罩有影响力10动物运输除这些之外11毁灭了1213141516171819202122232425262728293031323334Thank you for watching!35