标题（Title） 一般不超过80个字符
The Official Home Page of the U.S. Air Force
（44 个字符）
关键词（KeyWords）一般不超过100个字符
air force, us air force, af.mil, af, airforce, usaf, www.af.mil, united states air force
（88 个字符）
描述（Description）一般不超过200个字符
The official website of the U.S. Air Force. AF.MIL delivers the latest breaking news and information on the U.S. Air Force including top stories, features, leadership, policies, and more. For in-depth coverage, AF.MIL provides special reports, video, audio, and photo galleries.
（278 个字符）
