例文
1
less durable rocks were gradually worn away to form valleys
2
the perdurable granite of the ancient Appalachian spine of the continent
例文
2 / 2
1
less durable rocks were gradually worn away to form valleys
2
the perdurable granite of the ancient Appalachian spine of the continent
役に立った？
コメント (0)
ログインしてコメント
まだコメントがありません。最初に考えをシェアしましょう！
