Opiates like morphine and codeine are essential for treating severe pain.

像吗啡和待因这样鸦片制剂抑制剧痛必不少药物。

Opioid drugs can be naturally occurring, such as morphine or codeine, or synthetic, such as fentanyl or methadone.

阿片类药物天然存在，吗啡待因，也合成，芬太尼美沙酮。

A few common opiates and opioids include heroin, morphine, codeine, methadone, hydrocodone (known as Vicodin or Lortab) and oxycodone (otherwise known as Percocet) .

一些常见麻醉剂和阿片类药物包括海洛因、吗啡、待因、美沙酮、氢酮（称为维柯丁洛塔布）和羟考酮（也称为止痛药）。

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 鳄鱼地尔活性成分，它通过将待因溶解在强溶剂中制成，然后通过一系列简单但危险反应生成迅速溶解在身体组织中待因盐。