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1.The plant's subpetiolar veins are responsible for transporting water and nutrients to the leaves.
植物的次级叶脉负责将水分和养分输送到叶子。
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2.During the growth of a tree, the subpetiolar vessels grow larger and thicker to support the increased demand for water and nutrients.
在树木生长过程中，次级叶脉的血管会变得更粗更厚，以支持对水分和养分需求的增加。
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3. In botany, the subpetiolar vascular system is crucial for the distribution of water and nutrientsthroughout the plant.
在植物学中，次级叶脉的血管系统对于整个植物水分和养分的分布至关重要。