The boy wants to be a professional cyclist.

这男孩想成为职业自行车手。

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The U.S. Anti-Doping Agency accused Armstrong in October of involvement in a sophisticated doping program while he was a professional cyclist.

CNN: January 15, 2013 -- Updated 2128 GMT (0528 HKT)

Sir David left Ysgol Brynrefail, where he was a school friend was former Wales footballer Malcolm Allen, and moved to France to join his father as a professional cyclist.

BBC: Sir David Brailsford: London 2012 cycling chief knighted

If I were a professional cyclist during this era, and I wanted to win and I knew these percentages, most anyone reading this piece would be tempted towards using PEDs.

FORBES: Lance Armstrong, Prisoner's Dilemma, and Why Lying & Bullying is Worse Than Doping