noun ダウンロード 🔗共有 環礁 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 beautiful atoll, a ring of small islands surrounding a calm, blue lagoon. " 飛行機は、穏やかな青いラグーンを囲む小さな島の輪である美しい環礁の上を飛びました。 geology geography environment nature ocean AIとチャット語彙ゲーム読解練習
