词汇	high-grade coal
释义	high-grade coal 质煤
随便看	close-together Close together but not united close to home close-to-home Close to home feeling so far away close-up cloud chart close-up coal seam closeup cu close-up deflecting glass close-up deflecting prism close tolerance close-tolerance Close tolerance bolts for aircraft close tolerance casting close-tolerance casting close tolerance developed template close tolerance extrusion close tolerance flame cutting close tolerance forging close-tolerance forging close tolerance pipe close tolerances close to life close to life and feelings close to life mainstream