海洋是地球的主体、生命的摇篮、人类文明的源泉。地球表面分属为陆地和海洋。如以大地水准面为基准，陆地面积占地表总面积的29.2％；海洋面积占地表总面积的70.8％。海陆面积之比为2.5:1。
We call Earth the “Blue Planet” because the ocean covers about 71 percent of it! The world has five oceans: the Antarctic Ocean, the Pacific Ocean, the Arctic Ocean, the Indian Ocean and the Atlantic Ocean. The Pacific is the biggest — it’s bigger than all the land in the world put together. The Atlantic is smaller than the Pacific, but bigger than the Indian. The Antarctic is a little bigger than the Arctic Ocean, which is the smallest and frozen for a lot of the year. But scientists think that soon much of the ice will disappear because of climate change.
我们称地球为“蓝色星球”，因为海洋覆盖了地球的71% ！世界上有五大洋：南冰洋、太平洋、北冰洋、印度洋和大西洋。太平洋是最大的——它比世界上所有陆地的总面积还要大。大西洋比太平洋小，但比印度洋大。南冰洋比北冰洋大一点，北冰洋是最小的，它一年中的大部分时间都是冰冻的。但科学家们认为，由于气候变化，大部分冰很快会消失。
____▲____ Without oceans, humans, animals and plants couldn’t live. Oceans contain about 97 percent of all the water on Earth. Thanks to the water cycle, oceans give us rainwater and drinking water. At least half the oxygen we breathe comes from plants in the ocean. A lot of the food we eat comes from the ocean, and much of our energy comes from the ocean — both oil and gas are found under the sea. Today we can make electricity from waves and tides without pollution. Most of the goods that we use are transported on ships by sea, and boats are a way for people to travel. The coast is also a place for people to live and to have fun. Many people like to spend their free time and holidays at the beach!
海岸也是人们生活和娱乐的地方。许多人喜欢在海滩度过他们的空闲时间和假期!____▲____没有海洋，人类、动物和植物就无法生存。海洋包含地球上大约97%的水。由于水循环，海洋为我们提供雨水和饮用水。我们呼吸的氧气至少有一半来自海洋中的植物。我们吃的很多食物都来自海洋，我们的大部分能源都来自海洋——石油和天然气都是在海底发现的。今天，我们可以利用波浪和潮汐发电，而不造成污染。我们使用的大部分货物都是通过海上运输的，船也是人们旅行的一种方式。海岸也是人们生活和娱乐的地方。许多人喜欢在海滩度过他们的空闲时间和假期！
However, oceans are being polluted. There are billions and billions of pieces of plastic in our oceans. There are five huge patches (块) of plastic in the oceans around the world. One patch in particular, known as the “Great Pacific Garbage Patch”, measures 1.6 million square kilometres — that’s about seven times the size of the UK! Plastic in oceans is killing fish, birds, turtles and other sea creatures. It’s also dangerous for our health, because fish eat the tiny pieces of plastic and then humans eat the fish.
然而，海洋正在被污染。我们的海洋里有数十亿的塑料碎片。在世界各地的海洋中有五个巨大的塑料斑块。其中一块被称为“太平洋大垃圾带”，面积为160万平方公里，大约是英国面积的7倍！海洋中的塑料正在杀死鱼类、鸟类、海龟和其他海洋生物。这对我们的健康也很危险，因为鱼吃了小块的塑料，然后人类吃了鱼。
There’s lots that we can do, on World Oceans Day and on every day of the year!
在世界海洋日和一年中的每一天，我们都可以做很多事情！
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