humus

n.腐殖质

有机质；腐植土；腐殖质；

名词；

1、Humus is formed by the decomposition of plant and animal matter.
腐植质是由植物和动物残体的分解形成的。
2、The addition of humus to the soil improves its fertility.
将腐植质添加到土壤中可以提高其肥力。