"His 6,000 inventions included the electric light bulb, the phonograph, and the mimeograph machine."

"他作出了六千项发明,包括电灯泡,留声机(唱机)和油印机。"

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970年代之前，计算尺跟打字机和油印机一样，随处可见。