Around 1900 the pianola is introduced. This instrument, which is played by perforated paper rolls, becomes a world-wide success.
大约1900年，自动钢琴出现，它由打孔的卷纸来演奏，很快成功行销全球。
Around 1900 the pianola is introduced. This instrument, which is played by perforated paper rolls, becomes a world-wide success.
大约1900年，自动钢琴出现，它由打孔的卷纸来演奏，很快成功行销全球。
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