China's star track athlete Liu Xiang has admitted he has not fully recovered from a hamstring injury, but says he is confident of Olympic success.

中国田径明星运动员刘翔承认，他的脚筋损伤还没有完全恢复，但他仍然对奥运会的成功信心十足。

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Dropping out this time is the track athlete who won over fans in Beijing: Jamaican Usain Bolt, who sprinted to three world records at the Games and has continued breaking them since.

这次未能参赛的是在北京奥运会上一举成名的牙买加选手博尔特(Usain Bolt)。他在比赛中刷新了三项世界纪录，并在此后的赛事中延续了这种势头。

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She decided to transform her training routine and diet, and soon was back on track to become an all-star athlete.

她决定改变训练模式和饮食，很快又恢复了自己的实力，成为一名明星运动员。

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The 20-something athlete hurt his knee running track five years ago so he switched to disc golf, a lower impact game.

VOA: standard.2010.08.03

He made history in London last year when he became the first double-amputee track athlete to compete in the Olympic Games.

BBC: Oscar Pistorius weeps as court hears murder charge

At least one U.S. track athlete, Leo Manzano, also wrote on Facebook on Sunday that he was forced to remove a social-media post that mentioned his footwear brand.

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Pistorius made history in London last year when he became the first double-amputee track athlete to compete in the Olympic Games, propelling him to the status of an athletics superstar.

NPR: Olympian Pistorius Charged With Murder