An atoll is a circular reef surrounding a lagoon . 环礁是环绕着一个泻湖的环形礁石。
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Napoleon fish are one of the animal highlights in atoll reef , ocean park 苏眉是海洋公园海洋馆其中一种重点鱼类。
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Gan - addu atoll 甘岛-斯努环礁
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Pacific islanders , many living on coral atolls , are among those most at risk 太平洋岛屿上的居民有很多住在珊瑚礁岛上，他们面临的危险是最大的。
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Rennell , 86 km long x 15 km wide , is the largest raised coral atoll in the world 伦内尔岛长八十六公里，宽十五公里，是世界上最大的上升珊瑚环礁。
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A major feature of the island is lake tegano , which was the former lagoon on the atoll 这个岛最主要的特色就是特加诺湖，它以前是环状珊瑚岛的泻湖。
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Magnetism of drilling coral reef and coral clast from yongshu atoll of nansha islands , southern south china sea 南沙群岛永暑礁钻井珊瑚礁和珊瑚碎屑的磁学分析
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In 1943 , during world war two , us forces seized control of tarawa and makin atolls from the japanese 1943年二战期间，美国武力占领日本所有的塔拉瓦岛和马肯岛。
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1952 united states detonated her first hydrogen bomb , at eniwetok atoll in the marshall islands in mid - pacific 美国在太平洋中部绍尔群岛的埃尼威托克环礁爆炸第一颗氢弹。
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With a total of 20 napoleon wrasse , atoll reef has the largest population of this fish species amongst all aquariums in the world 海洋馆拥有20条苏眉，是全球拥有最多苏眉的水族馆。
