烏拉爾世 的释义 | Babel Free
u⁵⁵ lä⁵⁵ ˀɤɻ²¹⁴⁻²¹ ʂʐ̩⁵¹释义
the Cisuralian epoch (part of the Permian period, spanning from 298.9 to 272.3 million years ago)
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