名词
中文翻译：地球体积
同义词：
['earth mass', 'earth volume', 'earth mass density']
例句：
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1. The Earth's volume is about 510 million cubic kilometers.
地球的体积大约是51亿立方公里。
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2. The Earth's volume and mass are changing due to the effects of climate change.
由于气候变化的影响，地球的体积和质量正在发生变化。
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3. The Earth's volume and mass are important factors in understanding its structure and dynamics.
地球的体积和质量是理解其结构和动态的重要因素。