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。

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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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Long weather-stained in the storms and calms of all four oceans, his woodwork was darkened like the skin of an old sailor.

经历过四海的风暴和宁静，他的木板像老水手的皮肤一样的变为黝黑了。

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There is more heat stored in the top four metres of the oceans than in all the Earth's atmosphere.

ECONOMIST: Britain��s cold snap is explained by the Arctic oscillation

Unless something is done to reverse the decline in Europe's fish stock, the oceans here will be as devoid of life as deserts are in just four decades from now, President Grimsson said.

BBC: Davos 2013: Iceland slams Europe over fishing policy

Because of the distance that low-frequency sound waves can travel under water, a set of four ships emitting sound at 235 decibels could monitor 80% of the world's oceans for submarines.

ECONOMIST: The American navy may soon have a whale of a problem