sapropel layer腐泥层
algal sapropel藻质腐泥
dopplerite sapropel植酸腐泥
sapropel clay腐植黏土;腐泥粘土
sapropel coal腐泥煤
sapropel groundmass腐泥基质
peat sapropel泥炭
N（名词） an unconsolidated sludge consisting of the decomposed remains of aquatic organisms, esp algae, that accumulates at the bottoms of lakes and oceans 腐泥