Humus

(noun.) partially decomposed organic matter; the organic component of soil.

录入:朱迪思

• The water which thus passes into the humus and the soil beneath does not remain there, but slowly seeps downward, and finally after weeks and months emerges at a lower level as a stream. 伯莎M.克拉克. 科学通论.
• It is due also to the presence on the ground of decaying leaves and twigs, or humus. 伯莎M.克拉克. 科学通论.

整理:泰勒