最終更新日：2024/06/26
正解を見る
The Triassic period is one of the geological ages, referring to the period from about 252 million years ago to about 251 million years ago.
編集履歴（0）
元となった例文
The Triassic period is one of the geological ages, referring to the period from about 252 million years ago to about 251 million years ago.
