Read Edit View history 凹岸 āo'àn concave bank Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 凹岸 · āo'àn · concave bank 2026/03/04 凹岸 āo'àn concave bank concave bank 河流在凹岸处通常会受到水流的强烈侵蚀。 created sense Mar 4, 2026, 02:25 AM