名词
中文翻译：腐殖土层
同义词：
['organic layer', 'humus layer', 'organic layer', 'humus layer']
例句：
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1. Thesoil is rich in nutrients and has a humus layer that supports plant growth.
土壤富含养分，有一层腐殖土支持植物生长。
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2. The humus layer acts as a natural barrier against pests and diseases.
腐殖土层作为天然屏障，抵御害虫和疾病。
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3. The humus layer helps to retain moisture in the soil, which is essential for plant growth.
腐殖土层有助于保持土壤中的水分，这对植物生长至关重要。