The world is made up seven continents and four oceans.
世界是由七大洲和四大洋组成。
The world is made up of seven continents and four oceans.
世界是由七大洲和四大洋组成的。
How many oceans are there on the earth? There are four oceans.
地球上有几个大洋？有四个大洋。
How many oceans are there on the earth? There are four oceans.
地球上有几个大洋？有四个大洋。
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