片语
original source material原始油源物质
Import original helping material进口的原辅料
foreign original teaching material国外原版教材
original burn material原燃材料
Original listening material原始听力材料
Original Pirate Material原创私货
original structure material原型材料
starting material起始物料,原始材料;原材料
original teaching material原版教材
The Original Material Cost对原材料成本