40米高的蒸汽锅炉，每个蒸汽锅炉旁边都有升降机。
Steam boilers of 40 m height. An elevator near every boiler.
现代的升降机是十九世纪蒸汽机发明之后的产物。
Modern elevator is the product of the invention of the steam engine in nineteenth Century.
现代的升降机是十九世纪蒸汽机发明之后的产物。
Modern elevator is the product of the invention of the steam engine in nineteenth Century.
应用推荐