名词
中文翻译：根扩展
同义词：
['root growth', 'root development']
例句：
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1.The roots of the tree are growing deeper into the soil.
树的根正在更深地扎进土壤中。
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2.The plant's root expansion is essential for survival.
植物的根部扩张对于生存至关重要。
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3. The scientist studied the effects of root expansion on plant growth.
科学家研究了根扩张对植物生长的影响。