International Bureau of Exhibitions made stipulations after establishing in 1928, must confirm a theme in every World Expo, and has implemented since World Expo of Chicago of U.S.A. of 1933.是什么意思_International Bureau of Exhibitions made stipulations after establishing in 1928, must confirm a theme in every World Expo, and has implemented since World Expo of Chicago of U.S.A. of 1933.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句