This stuff is so toxic that in Russia, where it's been used since about 2003, it's reported that the average life expectancy of a krokodil user is two or three years.

这种东西有毒，在俄罗斯，大约从 2003 年开始使用， 据报道，鳄鱼使用者的平均预期寿命为两三年。

Desomorphine, the active ingredient krokodil, is made by dissolving codeine in powerful solvents, and then running it through a bunch of a simple but dangerous reactions to create codeine salts that quickly dissolve in body tissues.

Desomorphine 是鳄鱼地尔的活性成分，它是通过将可待因溶解在强溶剂中制成的，然后通过一系列简单但危险的反应生成可迅速溶解在身体组织中的可待因盐。