The player insists that he merely took a cold remedy and not a banned substance.该运动员坚持说他只是服用了感冒药而不是什么禁药。He has persistently denied ever taking banned substances.他一直否认曾服用过禁药。There was no evidence that the horse had been drugged.没有证据表明这匹马服过禁药。Many people think that the race has been a dirty event for years.很多人认为参加这一比赛的运动员多年来一直使用禁药。