你已经学过了，通过击打球的中心可以获得力量和控制，但书中和网球贴士中流行的击球方向指导却会产生相反的效果。
You've been told that hitting through the middle of the ball produces head-on contact for power and control, but the popular stroking direction in books and tennis tips produces the opposite effect.
你已经学过了，通过击打球的中心可以获得力量和控制，但书中和网球贴士中流行的击球方向指导却会产生相反的效果。
You've been told that hitting through the middle of the ball produces head-on contact for power and control, but the popular stroking direction in books and tennis tips produces the opposite effect.
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