大洋
大洋（粵拼：daai6 joeng4，英文：Ocean），傳統嘅廣東話係叫洋海（joeng4 hoi2），亦都叫海洋，係地球水體嘅重要部分，係好大面積嘅海或者洋。佢係一笪總共佔地球表面七成，大概3萬6100萬平方千米嘅鹹水。差唔多一半嘅大洋嘅深度超過三千米。平均嘅海水鹹度係大概千分之卅五（3.5%），差唔多所有海水鹹度係喺千分之卅一至到卅八之間。
睇埋
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