名词
中文翻译：密度
同义词：
['mass', 'weight', 'concentration例句：1. The density of the liquid is 0.9 g/cm³.（液体的密度是0.9克每立方厘米。）']
例句：
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1. The density of the liquid is 0.9 g/cm³.
液体的密度是0.9克每立方厘米。
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2. The density of the soil affects the growth of plants.
土壤的密度影响植物的生长。
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3. The density of the ocean is much higher than that of the air.
海洋的密度远高于空气。