石
炭
紀
石
炭
紀
Definitions3 charactersCarboniferous (geological 354-292m ago)
Usage•••frequent
Pronunciations
石
炭
紀
As word
1Carboniferous (geological period 354-292m years ago)
2Carboniferous (geological period 354-292m years ago)
3Carboniferous (geological period 354-292m years ago)
