名词
中文翻译：腐植质的
同义词：
['humus', 'humic acid']
例句：
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1.The soil was rich in sapropelic matter.
土壤富含腐植质。
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2. The forest floor is covered with sapropelic moss.
森林地面覆盖着腐植质苔藓。
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3. The study found that sapropelic matter can improve soil fertility.
研究发现，腐植质物质可以提高土壤肥力。