sediment humus的用法和樣例：
例句
- The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose.
缺少腐殖質(zhì)和過(guò)度淋濾使這種土壤對農業(yè)幾乎無(wú)用。 - The humus properties and mineral composition of clay have the distinct features of zonality.
腐殖質(zhì)性質(zhì)及礦物組成具有明顯的地帶性烙印。
