His pictures were shown at the Paris exposition of 1878.

他画在1878年巴黎博览会上展览过。

The mayor dedicated the World Fair yesterday.

长主持了世界博览会开幕式。

I ’d like to have your opinion on the 2008 World Expo.

我想听听您对2008年世界博览会看法。

On the whole, our website is the funest club for you.

总之，中国旋挖钻机网是旋挖钻机产品博览会，是旋挖钻机施工俱乐部。

We saw the World Fair.

我们参观了世界博览会。