寒武纪 (寒武紀) hánwǔ jì

hánwǔ jì proper noun Cambrian period
Domain: Modern Chinese 现代汉语 , Subdomain: Geology , Concept: Geological Period 地质年代
Notes: (CC-CEDICT '寒武紀'; Guoyu '寒武紀'; Wikipedia '寒武纪')

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