【記】a一個，stound＝sound聲。大叫一聲→使震驚

astound adj.使震驚 ( 極為驚訝和迷惑不解 )
【例】He was astounded when he heard his son had taken drugs.
他聽說他兒子吸毒，不禁大為驚訝。
【類】astound:wonder＝appall:horror 使吃驚導致驚奇＝使驚駭導致恐怖