名词
中文翻译：腐殖质的色素组
同义词：
['humic group', "humic fraction例句：1. The soil's ability to retain water and nutrients is influenced by the humic substances present in it.（土壤保留水分和养分的能力受到其中存在的腐殖质的影响。）"]
例句：
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1. The soil's ability to retain water and nutrients is influenced by the humic substances present in it.
土壤保留水分和养分的能力受到其中存在的腐殖质的影响。
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2. The study focused on the role of humic substances in nutrient cycling.
该研究关注了腐殖质在营养循环中的作用。
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3. The humic substances in the soil can help plants grow better.
土壤中的腐殖质可以帮助植物更好地生长。