rootstockWiktionary 原文中文来自 ECDICTn.根茎，根源，起源构词拆分root词根/词干+stock词根/词干词源说明From root + stock.释义（英文）名词 Noun(agriculture) A healthy and vigorous-rooted plant that is used in grafting, most commonly as a sound base to support a scion that bears desirable fruit in orchard culture.(figurative, by extension) The necessary basis