21. Emphasizes the need to ensure that adequate mechanisms are in place, where necessary and to the extent possible, to prevent the diversion of preparations containing substances listed in tables I and II of the United Nations Convention against Illicit Traffic in Narcotic Drugs and Psychotropic Substances of 1988, pertaining to illicit drug manufacture, in particular those containing ephedrine and pseudoephedrine, that could easily be used or recovered by readily applicable means;
21. 强调必须确保必要时尽可能建立适当机制，防止将含有1988年《联合国禁止非法贩运麻醉药品和精神药物公约》表一和表二所列与可通过随时可应用的手段轻易用于或恢复的非法药物制造有关的药物配剂、特别是含有麻黄碱和假麻黄碱的配剂转用他途；