As Member States had varying capacities to collect and report data, the true dimension of trafficking in narcotic drugs and psychotropic substances and of progress made in combating such trafficking remained somewhat uncertain.
由于会员国收集和报告数据的能力各不相同，因此，贩运麻醉药品和精神药物的实际范围和打击此类贩运活动所取得的进展仍然不太确定。