常見例句

• Three years later he inscribed a medalion which clearly showed the forces that apply in flight.On its reverse he sketched his plan for a monoplane gliding machine.
  3年后他刻了一枚銀章，正面是機翼上各種作用力的說明，背面是一架單翼滑翔機的草圖。
返回 Medalion