无论切削发球或平击发球，都要学习能以相同的托球位置，发往不同的方向和位置。

Work on being able to hit the slice and the flat serve off the same toss in different directions.

youdao

无论切削发球或平击发球，都要学习能以相同的托球位置，发往不同的方向和位置。

Work on being able to hit the slice and the flat serve off the same toss in different directions.

youdao