marl
n. 泥灰,泥灰土,泥灰磚
1. a loose and crumbling earthy deposit consisting mainly of calcite or dolomite; used as a fertilizer for soils deficient in lime
Marlstone is a limestone based clay that acts similar Marl.
泥灰岩石是與泥灰作用相似的一種以石灰石為基礎的粘土.
I will lay the foundation of the roof with the marl.
我要用這些泥灰苫背屋頂.