然后是去年美国反兴奋剂机构公布了一份报告，指责阿姆斯特朗成为一项非常复杂的服用禁药团体的中心而他正在赢取自己的环法自行车赛冠军。
Then last year, the U. s Anti-Doping Agency released a report, it accused Armstrong of being at the center of a very sophisticated doping program while he was winning his Tour De France titles.
与此同时，针对其工作的调查还在继续；上个月，管理游泳项目的全球性机构指派了一名律师，就波尔图加洛夫被控给俄罗斯游泳运动员提供禁药一事展开调查。
Investigations into his work, meanwhile, are continuing; last month, the global governing body for swimming appointed a lawyer to look into claims that Portugalov provided drugs to Russian swimmers.
在雅典时间星期天在雅典召开的一个新闻发布会上，美国年轻的游泳运动员菲尔普斯表扬了美国运动机构的反禁药工作。
At a news conference in Athens on Sunday, American teenager Michael Phelps praised the anti-doping efforts of the U. s. sports organizations.
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