单词	铁板砂
释义	铁板砂 hard layer
随便看	the biological sciences The biological study of bodies of water the biological technology major the biological validation method the Biological Weapons Convention the biologic method the biology base the Biology mistress the biology of bacteria the biology of marine animals the biology of Pennsylvania the biology of viruses The biology paper was a real stinker The biology properties the biomass accumulation the biomass yield The Biomechanics of Back Pain The biomedical breakdown of glycogen to glucose The biomedical fibrin sealant the biomolecular interaction network database the bionic mouth the bionics flapping aerocraft the bionics principle the biopharmaceutical enterprise The biopsy was taken from left forearm