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1.The oceanographic submersible was used to study the deep sea.
海洋学潜水器被用来研究深海。
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2. They used the oceanographic submersible to explore the underwater world.
他们使用海洋学潜水器探索水下世界。
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3. The oceanographic submersible is a powerful tool for scientific research.
海洋学潜水器是科学研究的有力工具。