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We had a story about ocean pollution.
我们写过一篇关于海洋污染的报道。
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The main factor affecting the ocean pollution comes from the land.
陆源污染是影响海域污染的主要因素。
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Ocean shipping is one of main source of Marine pollution.
海运业是海洋环境污染的重要来源之一。
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Ocean shipping is one of main source of Marine pollution.
海运业是海洋环境污染的重要来源之一。
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