Last Updated:2025/11/23
a large expanse of very flat and smooth ocean floor, usually found at depths of 4,600 to 5,500 meters (15,000 to 18,000 feet).
音声機能が動作しない場合はこちらをご確認ください
See correct answer
abyssal plain
Edit Histories(0)
Source Word
abyssal plain
( plural )