他的小发明包括利用雨伞和锡箔制造的一台运作良好的太阳能烹饪机，用填满水泥的轮胎制造的自动关门机。
His creations included a solar cooker made out of an umbrella and tin foil, which did not work very well, and an automatic gate-closer made out of cement-filled tyres.
他的小发明包括利用雨伞和锡箔制造的一台运作良好的太阳能烹饪机，用填满水泥的轮胎制造的自动关门机。
His creations included a solar cooker made out of an umbrella and tin foil, which did not work very well, and an automatic gate-closer made out of cement-filled tyres.
应用推荐