这个词是什么意思？
The act or practice of killing or allowing death from natural causes, for reasons of mercy, i.e., in order to release a person from incurable disease, intolerable suffering, or undignified death. (from Beauchamp and Walters, Contemporary Issues in Bioethics, 5th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D005065 · MeSH 2026。
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