单词	atoll
释义	atoll /ˈatɒl / /əˈtɒl / noun A ring-shaped reef, island, or chain of islands formed of coral.The islands of the Maldives are grouped in ring-shaped coral atolls, each enclosing a relatively shallow lagoon with a flat sandy bottom.... The Marshall Islands are a group of low-lying coral atolls and islands in the central Pacific Ocean. Tuvelu is one of the smallest countries on earth, a chain of nine coral atolls whose highest point is just a few meters above sea level. Origin Early 17th century: from Maldivian atoḷu.
随便看	dextral dextrality dextrally dextran dextrin dextro- dextrorotation dextrorotatory dextrose dextrous dexy dezincification dépanneur DF DFC DFID Dfl DFM DfT dg DH dhaba Dhahran Dhaka Dhakai

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