到20世纪70年代中期，日本已基本普及高中教育。

To the mid-1970s, Japan has been basically universal secondary education.

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近一个世纪以前，美国就几乎在全民范围内普及了高中教育，正如经济学家克劳迪娅·戈尔丁和劳伦斯·卡茨所说，一茬茬毕业生引领美国走向了经济繁荣。

Nearly a century ago, the U.S. made high school nearly universal, and the crop of graduates led the nation to economic prosperity, economists Claudia Goldin and Lawrence Katz have written.

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普及高中阶段教育。

Making senior high school education universal.

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