crust

sandwiches with the crusts cut off.切去边皮的三明治

earth's crust,地壳

continental crust,大陆地壳

weathering crust,风化壳

lower crust,下地壳；下部地壳

earth crust,地壳

upper crust,上流社会

oceanic crust,海洋地壳，大洋地壳

soil crust,土壤结皮；土结皮；土壤表壳

weathered crust,风化壳

crust leather,坯革；半硝革

pie crust,派皮；大馅饼皮；做馅饼的糊