今天我们要学的词是 official. Official, 大家都知道，official 做为名词，是官员的意思，做为形容词，则有正式的意思。It's official: Windows 10 will be released on July 29th. 正式消息称，视窗十7月29日发行。It's official: former Maryland Governor Martin O'Malley is running for President. 美国马里兰州前州长奥马利正式宣布参选总统。It's official: smoking will be banned in Seattle city parks. 西雅图正式宣布，城市公园里禁止吸烟。好的，今天我们学习的词是 official, official, official...