Several speakers acknowledged the increased level of global trafficking in precursors, in particular ephedrine, pseudoephedrine and ephedra, used to manufacture methamphetamine.
11. 有些发言者承认全球前体贩运的严重程度有所增加，特别是用于生产甲基苯丙胺的麻黄素、伪麻黄素和麻黄属植物的贩运。