n.直根；主根；根本

Taproot yellowish-brown, elongate-terete, unbranched. 直根黃棕色，拉長圓柱狀，不分枝。

Taproot long-cylindric, deep-rooted with a slender and elongated stem to soil surface. 直根長圓筒狀的，根深具一纖細和拉長的莖達土壤表面。

The root system of the soybean consists of a taproot formed by the radicle. 大豆的根系包括由胚根形成的主根。