| 摘要 |
Provided is a ball for leisure and sports of a new concept which is an application of a golf game. The ball relates to a modified golf ball which includes an external member having air vent holes and a core member of a rib form, in which a flight distance is shortened due to resistance of air when struck and in flight. The external member of the modified golf ball is configured to have a spherical outer cover integrated with and overlapped with the outer surface of a hemispherical inner cover. Since the modified golf ball is lightly flied when struck but its flight distance is shortened due to resistance of air, an effect of saving a land can be obtained in view of a practical use of the land, when a golf playing field is constructed.
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