| 释义 |
Ha·de·an Time 英heɪˈdiːən, ˈheɪdiː-美heˈdiən, ˈhedi-AHDhā-dēʹən, hāʹdē-
基本英英
🌏哈代时间
Noun:
the earliest eon in the history of the Earth from the first accretion of planetary material around 4,600 million years ago until the date of the oldest known rocks about 3,800 million years ago; no evidence of life |