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地球上的陆地广布四方、彼此隔开,而海水则是四通八达、连成一体,这一连片不断的水体便构成了世界海洋。世界海洋是以大洋为主体,与围绕它所附属的大海同共组成。全世界共有四大洋:太
The four corners of the earth are covered by land, separated from each other, while the sea is connected in all directions. The continuous water body constitutes the world’s oceans. The world’s oceans are dominated by oceans and formed together with the sea around them. There are four oceans in the world: too