20世纪20年代末无声电影向有声电影的转变标志着迄今为止电影史上最重要的转变。
The shift from silent to sound film at the end of the 1920s marks, so far, the most important transformation in motion picture history.
最后，电影音效的力量既感动了观众，又增强了故事情节，这让电影公司相信有声电影值得投资。
In the end, the power of cinematic sound to both move audiences and enhance the story persuaded studios that talkies were worth investing in.
几乎每一种语言中，无论措辞，电影史最基本的划分都在于无声和有声电影之间。
In nearly every language, however the words are phrased, the most basic division in cinema history lies between films that are mute and films that speak.
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