stercorin

例句：

1. 1.The stercorin in the soil helps plants grow better.
   土壤中的石蕊素有助于植物生长得更好。
2. 2.The plant's ability to absorb water from the soil depends on its stercorin content.
   植物从土壤中吸收水分的能力取决于其石蕊素含量。
3. 3.Scientists are studying how stercorin affects plant growth and development.
   科学家们正在研究石蕊素如何影响植物的生长和发育。