| 摘要 |
A device for practicing tennis rebounds comprising an anchor or weighted base, a tennis ball and a generally elastic cord connected therebetween. The line or cord is provided with adjusting means for varying the length of the cord from a maximum length to one-half thereof, thereby enabling the ball return speed to be controlled by setting a desired or predetermined length for the elastic cord. The greater the length of the elastic cord, the slower the return of the tennis ball.
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