显生代 (顯生代) xiǎnshēngdài

xiǎnshēngdài proper noun Phanerozoic ago
Domain: Modern Chinese 现代汉语 , Subdomain: Geology , Concept:
Notes: , geological eon lasting since the Cambrian 寒武纪, c. 540m year (CC-CEDICT '顯生代')