英语词汇“optical sound”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	optical sound
释义	WordReference Random House Unabridged Dictionary of American English © 2024 op′tical sound′, [Motion Pictures.] Cinemasound recorded on and subsequently played back from an optical or photographic soundtrack, as opposed to a magnetic soundtrack. 1930–35
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