并接,聯(lián)結(jié)分支系統(tǒng)的不同部分結(jié)合后形成一個網(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.
埃文河是塞文河的支流。 The Avon is a tributary of the Severn.