
The atolls are composed of live coral reefs and sand bars, situated atop a submarine ridge 960 kilometers long that rises abruptly from the depths of the Indian Ocean and runs from north to south.
環礁由活著的珊瑚礁和沙洲組成,生長在印度洋深處從南到北長貫960公里的陡峭海脊之上。
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