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keirin; cycle racing event, usu. 2 km with a paced start and sprint finish
競輪はオリンピック種目になった。
Keirin became an Olympic sport.
競輪選手は脚力がすごい。
Keirin cyclists have incredible leg strength.
競輪場で初めてレースを見た。
I watched a race at the velodrome for the first time.