This day, 30 April, in 2010, President Hu Jintao announced the opening of the Shanghai World Expo. With 246 countries and international organisations participating, during the following 6 months the Shanghai World Expo would see more than 73 million visitors, the highest number of visitors ever in the history of the World Expo which dates back to 1851.
这一天，即2010年4月30日，胡锦涛主席宣布上海世博会开幕。 在接下来的6个月里，有246个国家和国际组织参加，上海世博会将接待超过7300万游客，这是世博会历史上最高的参观人数，可以追溯到1851年。
