World expositions are galleries of human inspirations and thoughts .

世界博览会是人类灵感和思想的艺术长廊。

Innovation is the soul , while cultural interaction is an important mission of the world expositions .

创新是灵魂，但是文化间的互动交流是世博会的一项重要任务。

They seem a little interchangeable with conferences and expositions .

它似乎是会议与展览会的同义词。

A natural question , when public expositions of the greenhouse effect usually present it as a matter of elementary physics .

一个通常遇到的问题是，当向公众解释温室效应时，常常将其归纳为一个纯物理学的问题。

On the one hand , we shall endeavour to attract about 200 nations and international organisations to take part in the exhibition as well as 70 million visitors from home and abroad , ensuring the widest possible participation in the history of the world expositions .

一方面我们将竭力吸引大约200个国家和国际性组织以及来自国内外的7000万参观者来参加这次展览会，确保世博会历史上最广泛的参与度。