However, the ball is only deemed in play when it touches the ground, so the keeper can only touch it once it has dropped. If he touches it before that point, the drop-ball is retaken.
但是，坠球只有当球触地后比赛才会重新开始，所以门将只有等球落地之后才能触球，否则的话，你将重新坠球。
Push a ping-pong table against a wall and play ping-pong with the wall, try to keep the ball off the ground.
把乒乓球桌一端顶着墙壁，站在另一端与墙对打，球不要落地。
Outfielders play catch with outfielders and work on throwing off a simulated catch of a fly ball, thawing after charging a simulated ground ball, and so on.
外野手跟外野手进行高飞球传接练习，以及一弹球传接练习等等。
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