名词
中文翻译：深层
同义词：
['subsurface layer', 'deep structure']
例句：
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1.The researcher found that the deep layerof the soil was rich in nutrients.
研究人员发现土壤的深层富含养分。
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2. The engineerdesigned a deep layer to support the weightof the building.
工程师设计了一个深层来支撑建筑物的重量。
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3. The scientist discovered a deeplayer of sediment beneath the ocean floor.
科学家在海底发现了一层沉积物。