冥古宙
the Hadean eon (part of the Precambrian supereon, spanning from around 4.6 to 4 billion years ago)
Frequency 1.7
Meanings
- the Hadean eon (part of the Precambrian supereon, spanning from around 4.6 to 4 billion years ago)
the Hadean eon (part of the Precambrian supereon, spanning from around 4.6 to 4 billion years ago)
Frequency 1.7