Last Updated：2025/11/29
To stabilize the old bridge, the stonemason had to key up the whole ring of the arch by driving the keystone in forcibly.
See correct answer
To stabilize the old bridge, the stonemason had to key up the whole ring of the arch by driving the keystone in forcibly.
音声機能が動作しない場合はこちらをご確認ください
Edit Histories（0）
