名词短语
中文翻译：海洋底部扩张
同义词：
['seafloor spreading', 'oceanic crustal spreading', 'oceanic lithospheric spreading']
例句：
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1. The oceanfloor spreading is a major factor in the formation of new landmasses.
海洋底部扩张是形成新陆地的主要因素。
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2.The ocean floor spreading has been studied extensively in order to understand the Earth's geological history.
海洋底部扩张的研究广泛进行，以了解地球的地质历史。
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3.The ocean floor spreading is responsible for the movement of tectonic plates and the formation of mountain ranges.
海洋底部扩张负责推动板块运动和山脉的形成。