n.潮水；受海潮影響的河水；低洼的海岸
The marks record the height of the tidewater. 記號標明了潮水的高度。
The ocean waves were shining and moving under my feet, and the tidewater was coming up little by little. 海浪一波一波地在腳下漾著粼粼的波光，潮水漸漸地漲上來。
