And this was the fifties, the grayest, bleakest, most blinkered and culturally repressive period in the entire second half of the twentieth century, especially in small-town America.

在整个二十世纪后半期，这是最阴郁，最黯淡，最盲目的时期，也是文化上最压抑的时期。美国小镇上的生活更是如此。

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At the beginning of the twentieth century, life expectancy at birth in America was 47.3 years, and in the middle of the nineteenth century it was less than forty.

在二十世纪初，美国的生命预期是47.3岁，而在19世纪中期还不到40岁。

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The expression was first used in America at the beginning of the twentieth century.

人们第一次使用这个短语是在二十世纪初期时的美国。

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With her pictures in Life magazine, she told a story about America's "Wild West" in the twentieth century.

VOA: special.2009.05.17

Now, I'm talking about 1900 America where has that happened in the twentieth century more dramatically?

刚才我说的就是在二十世纪,美国的哪些行业发生了巨大的变革

耶鲁公开课 - 博弈论课程节选

The expression was first used in America at the beginning of the twentieth century.

VOA: special.2009.11.15

In this sense alone, modern America confronts a crisis of major proportions in the last decades of the twentieth century.

FORBES: James Buchanan (1919-2013): He Saw Our Present Spending Disaster Coming

Both he and his wife, Helen, were children of Italians who came to America in the great migration wave of the early twentieth century.

NEWYORKER: Mayberry Man

Now that the PlayStation 3 has launched in North America several members of the Blu-ray Disc Association (Twentieth Century Fox, Panasonic, Philips, Pioneer, Sony and Warner Bros.) are pushing the "Experience Blu" ad campaign via print, online and television.

ENGADGET: BDA wants you to "Experience Blu" with new ad campaign HD