"His 6,000 inventions included the electric light bulb, the phonograph, and the mimeograph machine."
"他作
千项发明,包括电灯泡,留声机(唱机)和
机。"
机,誊写版
机件,誊写版品机,"His 6,000 inventions included the electric light bulb, the phonograph, and the mimeograph machine."
"他作千项发明,包括电灯泡,留声机(唱机)和机。"
Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.
1970年代之前，计算尺跟打字机和机一样，随处可见。
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