The U.S. is also the only advanced economy that does not guarantee workers paid vacation time, and it's one of only two countries in the world that does not offer guaranteed paid maternity leave.

美国也是唯一一个不保障员工带薪假期的发达经济体，也是世界上仅有的两个不提供带薪产假保证的国家之一。

youdao

And there's only two countries, the U.S. and the former Soviet Union, that had major efforts on trying to create biological warfare agents.

世界上只有美国和前苏联曾经花大力气研究生物武器。

youdao

For the past two years, the U. S. and Israel were the only two countries to vote against the measure.

在过去两年里，美国和以色列是唯一两个投反对票的国家。

youdao

But the requirements of HIPC were so strict that only two countries have benefited from it.

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Only two countries are above the western European average: Slovenia, thanks to its wealth, and Turkey, because of its booming birthrate.

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By contrast, a 2002 study found that only two countries censored the Web, says Palfrey, who is also an investigator at OpenNet.

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