prodophytium

例句：

1. 1. The plant's root nodules are essential for its survival.
   植物的根瘤对其生存至关重要。
2. 2.The bacteria in the nodules help the plant to absorb nutrients from the soil.
   根瘤中的细菌帮助植物从土壤中吸收养分。
3. 3. Researchers have found that certain species of rhizobium can fix nitrogen from the air into the soil.
   研究人员发现某些类型的根瘤菌可以将空气中的氮固定到土壤中。