For example, why was women's suffrage, instituted nationally in the United States in 1920, not instituted nationally in Switzerland until the 1970's?

例如，为什么美国在1920年开始实行妇女选举权，而瑞士直到20世纪70年代才开始实行？

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When drive-ins were at the height of their popularity in the late 1950's, some 4,000 existed in the United States, but today there are less than one-quarter that many.

在20世纪50年代末汽车影院最受欢迎的时候，美国大约有4000家汽车影院，但如今，这个数字还不到当时的四分之一。

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The United States consumes one-fifth of all the world \ \ \ 's coffee, making it the largest consumer in the world.

美国作为世界最大的咖啡消耗国，消耗了世界上五分之一的咖啡。

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Mother Jones is recognized in the National Women's Hall of Fame and the United States Labor Department's Labor Hall of Fame.

VOA: special.2009.03.16

What's happening right now in the United States - is that the economy is collapsing- maybe that's overstating it.

现如今在美国发生的是,经济正在崩溃-,也许这是夸大这件事。

耶鲁公开课 - 金融市场课程节选

I wanted to talk about another instance of regulation that is important in the united States but it's very poorly known.

我想谈谈另一种监管措施,在美国十分重要,但鲜为人知

耶鲁公开课 - 金融市场课程节选

His indulgence does nothing to undermine the United Kingdom's or the United States' common efforts to find, interrupt, interrogate, and occasionally-as we saw in Pakistan last week with the demise of Baitullah Mehsud-kill a terror mastermind.

CENTERFORSECURITYPOLICY: 'Going Wobbly'

Aquaculture provides 43% of the world's seafood, according to the United Nation's Fisheries and Aquaculture Organization (FAO).

FORBES: Magazine Article

Susan Rice, the U.S. ambassador to the United Nations, said the United States welcomes Ban's announcement.

CNN: Ban to Syria: You get chemical weapons probe, we get access