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想一想罗迪克的重炮发球,威廉姆斯的暴力正手,还有穆雷富有穿透力的反手击球,你就会发现一个共同点——他们的平击和旋转都非常有力!
Think of Roddick’s heavy guns serve, Williams’s violent forehand, and Murray’s see-through backhand hit, and you’ll all find one thing in common - their level and rotation are very powerful!