sediment humus

• 沉积腐殖质

sediment humus的用法和样例：

例句

1. The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose.
   缺少腐殖质和过度淋滤使这种土壤对农业几乎无用。
2. The humus properties and mineral composition of clay have the distinct features of zonality.
   腐殖质性质及矿物组成具有明显的地带性烙印。