这个词是什么意思？
Calamities producing great damage, loss of life, and distress. They include results of natural phenomena and man-made phenomena. Normal conditions of existence are disrupted and the level of impact exceeds the capacity of the hazard-affected community.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D004190 · MeSH 2026。
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