sound reader
良好的读者
以上为机器翻译结果，长、整句建议使用 人工翻译 。
But, starting in the nineteen-thirties, music soundtracks were added to silents, and the films needed to move through the projector at twenty-four frames a second, so that the optical sound reader could handle the music track.
NEWYORKER: The Artists
What does this sound like to you, dear reader?
FORBES: The World Economy Is Turning Japanese, I Really Think So
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