USA's Bianca Kinght, Allyson Felix, Tainna Madison and Carmelita Jeter celebrate, gold medal, 4X100 relay in world record time. 金牌,   4X100接力的世界紀錄.

 (Wally Skalij/Los Angeles Times/MCT)
 (Vernon Bryant / Staff Photographer) (Vernon Bryant / Staff Photographer)
 (AP Photo/Matt Dunham)
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 (Wally Skalij/Los Angeles Times/MCT)
US’ Tianna Madison, US’ Carmelita Jeter, » Solid Gold. The 12 Best Images of America’s 12 Golds at IAAF Track and Field Worlds.
Felix, Jeter help US break 1985 record in 4x100
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 Olympic Stadium August 10, 2012. REUTERS/Eddie Keogh | Madison, Felix, Knight and Jeter of the U.S. pose with gold medals in women’s 4 x 100m relay at the London 2012 Olympic Games in London
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