rhizobial nodule的用法和樣例：
例句
- Within the nodule, rhizobia proliferate in very dense clusters of cells with altered morphology.These cell forms are called bacteroids.
在根瘤中，根瘤菌在形態(tài)改變的細胞中大量增殖緊密排列，這些，細胞組織被稱(chēng)作類(lèi)菌體。 - The root nodule of the legume plant's ability of nitrogen fixation from air makes it grow in the poor soil very well.
摘要豆科植物的根瘤可以從空氣中固定氮氣而在貧痔的土壤中生長(cháng)。
