Dòukē zhíwù de gēn shàng zhǎng zhe gēnliú, néng gùdìng kōngqì zhōng de dàn.
Legumes grow nodules on their roots that can fix nitrogen from the air.
Tips
usage
豆科 is usually followed by 植物 (plants) to mean the legumes themselves. Chinese plant families add 科 to a typical member: 豆科 from beans, 蔷薇科 (the rose family), 菊科 (the daisy family).
