在这激动人心的历史时刻，我谨代表第29届奥林匹克运动会组织委员会向来自世界各国家、地区的运动员、教练员和来宾表示热烈的欢迎！

In this exciting historical moment, I, on behalf of the 29th Olympic Games Organizing Committee to come from the world's countries and regions of the athletes, coaches and guests a warm welcome!

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本周，来自世界各国的代表齐聚乌拉圭，商讨控制烟草的新办法。

Delegates from around the world are meeting this week in Uruguay to consider new ways to control tobacco.

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来自世界各地的数千名运动员齐聚上海游泳世锦赛。 然而除了备战外，各国代表团还在积极防御瘦肉精。

With thousands of swimmers converging on Shanghai for the world championships, teams are taking precautions against the threat of contaminated Chinese meat.

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I was part of a huge conference last summer in West Africa on the end of the slave-trade in Ghana, and we had representatives we had people participating in that conference from 15 or 16 different African countries.

我去年夏天曾参加过西非的一个大型集会,纪念是加纳奴隶交易的结束,会议上有来自各国的代表,有15或16个非洲国家的代表,参与的这次大型会议

耶鲁公开课 - 美国内战与重建课程节选