Steam Locomotive, Car, Steam Boat, Stagecoach, Fountain Pen, Printing Press, Microphone, Loudspeaker, Morse code, Braille code, Paper Clips, Stapler, Type Writer, Telegraph, Telephone, Radio,

Inventions 19th Century

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排行榜

翻卡片是一个开放式模板。它不会为排行榜生成分数。

视觉风格

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恢复自动保存：？