n.

the state of being covered with unclean things

同義詞：dirtfilthgrimestaingreasegrunge

the part of the earth's surface consisting of humus and disintegrated rock

同義詞：dirt

material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)

"good agricultural soil"

同義詞：landground

the geographical area under the jurisdiction of a sovereign state

"American troops were stationed on Japanese soil"

同義詞：territory

The nature and properties of soils.
DNA recovery from soils of diverse composition.
Soil mechanics for unsaturated soils.
Soil mechanics for unsaturated soils.
Diagnosis and improvement of saline and alkali soils
Diagnosis and improvement of saline and alkali soils
Organic matter and water‐stable aggregates in soils
Diagnosis and improvements of saline and alkali soils
Field-Scale Variability of Soil Properties in Central Iowa Soils
A closed-form equation for predicting the hydraulic conductivity of unsaturated soils.