Not only are you short-changing your court coverage when your penultimate step works inefficiently (2D above), but your momentum gets re-directed away from the ball, 2F.
Not only are you short-changing your court coverage when your penultimate step works inefficiently (2D above), but your momentum gets re-directed away from the ball, 2F.
不仅你的倒数第2步低效(2D)使得你对场地的覆盖面变小,并且你的冲量改向飞离网球,2F.