His 6,000 inventions included the electric light bulb, the phonograph, and the mimeograph machine.
His 6,000 inventions included the electric light bulb, the phonograph, and the mimeograph machine.
他的六千项发明,包括电灯泡,留声机(唱机)和油印机。
His 6,000 inventions included the electric light bulb, the phonograph, and the mimeograph machine.
他的六千项发明,包括电灯泡,留声机(唱机)和油印机。