The 1851 is the first year of London as a city, which is the year of the first world fair.

1851年是伦敦正式建市的第一年，也是第一届世界博览会的召开之日。

I'd like to squeeze this round world fair and square.

我想把这个圆圆的世界挤得公平公正。

World fair; trade fair ; book fair.

世博会；商品交易会；书籍市场。

The Silver Medal have obtained in BRUSSELS EUREKA world Fair for Invention.

在布鲁塞尔尤里卡世界发明博览会获得银质奖章.

The World Fair to be held in Shanghai nest year covers an area of about 200,000 square meters.

明年在上海举行的时间博览会占地约二十万平方米。