埃迪卡拉纪 (埃迪卡拉紀) āi dí kǎlā jì

āi dí kǎlā jì proper noun Ediacaran period
Domain: Modern Chinese 现代汉语 , Subdomain: Geology , Concept:
Notes: c. 635-542 million years ago; Late phase of pre-Cambrian geological era (CC-CEDICT '埃迪卡拉紀')