名词
中文翻译：Unknown
同义词：
['endosperm', 'endospermum']
例句：
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1. The roots of the plant penetrate deeply into the soil to find water and nutrients.
植物的根深入土壤寻找水分和养分。
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2. The endostracum layer helps to retain moisture in the soil.
内层土壤有助于保持土壤中的水分。
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3. The endostracum is rich in organic matter and can help improve soil fertility.
内层土壤富含有机物质，有助于提高土壤肥力。