The drug addict was snorting cocaine every night. 这个瘾君子每天晚上都用鼻吸食可卡因。
Stephen has just confessed to taking cocaine. 史蒂芬刚刚坦白说自己吸食过可卡因。
Mice that lack the receptor do not become dependent no matter how much cocaine they are given. 缺少这个受体的小鼠，无论服用过多少古柯碱，都不会上瘾。
If the GCMS fingerprint of a sample matches that of heroin or cocaine, it is nearly impossible for even the best defense lawyer to challenge the result successfully. 如果样品透过气相层析质谱分析仪呈现出来的特徵，符合海洛因或古柯碱，那麽就算是请到王牌辩护律师，也不可能成功打败这样的结果。
