伯利兹的大蓝洞(great blue hole)—407英尺深 (约124米深)
大蓝洞丨伯利兹great blue hole是目前已发现的全世界最大的水下洞穴
巴哈马长岛,迪恩的蓝洞 ( dean's blue hole),—660英尺深 (约201米)
the great blue hole off the coast of belize
蓝洞(great blue hole)为一石灰岩洞,是目前已发现的全世界最大的水下
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