葉脈的用法和樣例：
例句
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并接，聯(lián)結分支系統的不同部分結合后形成一個(gè)網(wǎng)絡(luò )，如葉脈，血管，或河流及其支流
The connection of separate parts of a branching system to form a network, as of leaf veins, blood vessels, or a river and its branches. -
中脈中心的或主要的葉脈
The central or principal vein of a leaf.
