noun 다운로드 🔗공유 환초 A type of island consisting of a ribbon reef that nearly or entirely surrounds a lagoon and supports, in most cases, one to many islets on the reef platform. Atolls have a unique geology, so not all islands with a reef and a lagoon are atolls Examples : "The airplane flew over a chain of beautiful atolls, each a ring of tiny islands surrounding a calm, blue lagoon. " 비행기는 잔잔하고 푸른 석호를 둘러싼 작은 섬들의 고리인 아름다운 환초 체인을 지나 날아갔다. geography geology environment world nature ocean AI와 채팅어휘 게임독해 연습
