I've come here for the World Expo.

我来这里参加世博会。

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I am a volunteer for the world Expo.

我是世博会的志愿者。

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He was very proud of having been selected as a volunteer for the World Expo.

他很自豪自己入选世博志愿者。

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North Korea, whose economy is in tatters and is facing tough international sanctions is participating in the World Expo for the very first time.

VOA: standard.2010.05.02

Jose Manuel Barroso, E.U.Commission President, "It is the first time for the European Union to take part in a World Expo outside Union's territory.

VOA: standard.2010.05.02

There is of course a tremendous amount of effort that goes into the marketing of a city to be a true contender for the Olympic games or to host the world EXPO.

FORBES: How To Market an Olympic Bid City Or an EXPO bid city To Win.

Every business has its boondoggles, and for those in the world music trade, the World Music Expo otherwise known as WOMEX is it.

NPR: The Musical Worlds of WOMEX

Since then, two events, the Beijing Olympics later that year and the Shanghai World Expo of 2010, might have served as coming-out parties for a rising China.

ECONOMIST: China's repressive new rulers