这个词是什么意思？
A narcotic analgesic that may be habit-forming. It is a controlled substance (opium derivative) listed in the U.S. Code of Federal Regulations, Title 21 Parts 329.1, 1308.11 (1987). Sale is forbidden in the United States by Federal statute. (Merck Index, 11th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D003932 · MeSH 2026。
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