It was a huge success. In the United States, the rise of television in the nineteen fifties ended the Golden Age of Radio Broadcasting.

VOA: special.2010.01.31

There's sort of a period around the age of four, four and a half, where kids make the transition from failure to success.

儿童在大约四岁四岁半时,会发生从失败向成功的转变

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