Thoughts turn first to some sort of global statistic, some indicator which would rate the wealth of nations in both economic and environmental terms and show a relationship between the two.

人们首先想到的是某种全球统计数据，某种指标，它将对各国的经济和环境条件进行评级，并显示出两者之间的关系。

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This means profound change in nearly every important relationship we have - as family members, neighbors, citizens of nations and the world.

这意味着我们几乎每一个重要的关系的深刻变化，-家庭成员，邻居，国家和世界公民。

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Mr Obama talked of a "normal relationship between sovereign nations".

奥巴马提出了主权国家之间的正常关系。

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U.S.-Venezuelan relations have been tense in recent years, although both nations agreed this year to seek a relationship based on mutual interest.

VOA: standard.2009.09.24

However,the two nations have had a bumpy relationship over the years.

VOA: standard.2009.07.02

"But above all,your visit at this pivotal moment in history speaks to the opportunity before us to build the relationship between our nations born in the last century into one of the defining partnerships of the 21st century,"

VOA: standard.2009.11.25

The U.S.-brokered Camp David accords, signed by Israeli Prime Minister Menachem Begin and Egyptian President Anwar Sadat in 1978, ended a generation of hostilities between the two nations and forged a relationship that has endured, in part, because of the stability of the Mubarak regime -- which came to power after Sadat was assassinated in 1981 -- and in spite of deep animus among rank-and-file Egyptians toward Israel.

CNN: The Sweep: The risk of democracy in the Middle East

NPR's Farai Chideya spoke with two women who study Brazil, the U.S., and the relationship between these nations.

NPR: Afro-Brazilian, African-American Ties

Sociology and economics aside, any relationship between two nations also comes down to individuals who straddle the gap in surprising ways.

ECONOMIST: The Greeks and the Chinese