n.直根；主根；根本

Taproot yellowish-brown, elongate-terete, unbranched. 直根黄棕色，拉长圆柱状，不分枝。

Taproot long-cylindric, deep-rooted with a slender and elongated stem to soil surface. 直根长圆筒状的，根深具一纤细和拉长的茎达土壤表面。

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。