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old electric typewriter: [1](35s):single key repeating, bell, carriage returns;[2](34s):various single keystrokesSQ无损品质 | 25901:19下载 收藏打字机(typewriter) / 电动(electric)
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old electric typewriter: backspace [1](1s):key;[2](2s):key, three timesSQ无损品质 | 22500:12下载 收藏打字机(typewriter) / 电动(electric)
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old electric typewriter: [1](2s):index key, three times;[2](10s):space bar, several times;[3](1s):carriage returnSQ无损品质 | 14500:25下载 收藏打字机(typewriter) / 电动(electric)
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old electric typewriter: [1](45s):single letter keystrokes;[2](81s):slow typing, bell, carriage return;[3](20s):medium typing, bell;[4](38s):medium typing, carriage returns;[5](99s):medium fast typing, bell, carriage returnsSQ无损品质 | 3705:02下载 收藏
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old electric typewriter: tab [1](1s):key;[2](11s):key clicks, severalSQ无损品质 | 2400:21下载 收藏打字机(typewriter) / 电动(electric)
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old electric typewriter: turn [1](2s):on and shut off quickly;[2](4s):on and shut off;[3](6s):on and shut off;[4](31s):on, sit idle, shut offSQ无损品质 | 2300:57下载 收藏
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old electric typewriter: [1](6s):load paper, carriage roll;[2](8s):remove paper, carriage roll;[3](19s):load paper and remove, carriage rollSQ无损品质 | 1900:45下载 收藏
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old electric typewriter: [1](1s):short carriage roll, close up;[2](6s):carriage rollsSQ无损品质 | 900:16下载 收藏打字机(typewriter) / 电动(electric)