名词
中文翻译：含水率
同义词：
['water content', 'moisture content']
例句：
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1.The soil's sap concentration is low, indicating a lack of nutrients.
土壤的含水率低，表明缺乏养分。
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2.The plant's sap concentration can be affected by the environment.
植物的含水率可能受到环境的影响。
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3.The sap concentration in the tree trunk is higher than that in the branches.
树干中的含水率高于树枝中的含水率。