coal gap
synonym of campground
Third-person singular simple present indicative form of upgird
(geology) The time period with few coal deposits from the Permian to middle Jurassic.
Nominal governance by a dead person, through posthumous holding of an official position of authority, or by popular veneration and lasting influence of a personal ideology; necrocracy.
古植物学者たちは、石炭の乏しい時期に生態系がどのように回復したかを理解するために植物化石を研究した。
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