| 摘要 |
An amusement device in the form of a light ball fastened to an elastic cord and a hand grip for holding the outer end of the cord and a supply of additional cord. Circular movement of the hand and wrist will cause the ball to swing in a circular or elliptical path and the user attempts to keep the ball moving by hitting it, either with his hand or with a paddle, every time the ball swings toward him.
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