They replaced other minute organisms as a food source in the major marine food chain.
它们取代了其他微小生物，并成为了主要海洋食物链的食物来源。
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。
Marine gas hydrate is a great potential energy source.
海洋天然气水合物是一种潜在的巨大能源。
Oil spills from ships are an important source of Marine environment pollution.
船舶溢油事故是造成海洋环境污染的重要途径。
Oil spills from ships are an important source of Marine environment pollution.
船舶溢油事故是造成海洋环境污染的重要途径。
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