名词
中文翻译：根的下部
同义词：
['root lower part', "root's lower part", 'lower root part']
例句：
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1. The roots of the tree are visible in the soil.
树的根部在土壤中可见。
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2. The lower part of the plant is where the roots grow.
植物的下部是根生长的地方。
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3. The lower part of the root system is where nutrients are absorbed.
根系统的下部是吸收养分的地方。