Phelps is one of 12 Olympic athletes who pledged to "My Victory," an initiative launched last year by the U.S. Anti-Doping Agency aimed at keeping competitive sports clean.

据悉，菲尔普斯是12个向“我的胜利”倡议（去年由美国反兴奋剂机构发动，旨在保持竞技体育纯净性）做出承诺的奥运健儿之一。

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Sports world does not tolerate doping as it is the fundamental form of cheating.

由于它是影响力大的欺骗形式，体育界是不会容忍运动员服用兴奋剂的。

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After Revelations of a massive, state-run doping program in Russia, sports officials have been retesting urine samples from the 2008 and 2012 Summer Olympics, in Beijing and London.

继俄罗斯一个由国家主导的大规模兴奋剂项目被曝光之后，体育官员又对2008和2012年分别于北京和伦敦举行的夏季奥运会的尿样重新进行检测。

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Anti-doping officials say they want to protect the integrity of sports by guaranteeing what they call a level playing field.

VOA: special.2011.04.12

The White House Office of National Drug Control Policy provided a statement about sports doping to VOA.

VOA: special.2011.04.12

By the nineteen-twenties, sports organizations were attempting to stop the use of doping substances.

VOA: special.2011.04.12

With all the recent headline stories about sports doping, there's one you may have missed.

NPR: Anti-Doping Agency Reviews Low-Oxygen Tents

And as professionals, whose livelihood depended on results, and where testing was either non-existent or a step behind the latest advances in sports doping, it is unsurprising that so many succumbed.

ECONOMIST: The Tour de France is not dead yet

Torri has a reputation for being uncompromising in the battle against doping, having charged sports personalities in the past even when they argued that their positive tests were the result of accidents.

BBC: Angry Cannavaro cleared of doping