| 摘要 |
A golf club has a shaft and a head attached to the shaft. The head has a ball-striking surface. An aperature is formed in the surface for allowing light to pass therethrough. A cavity is formed in the head adjacent the aperature. A light-producing insert is received within the cavity. A nonlight-producing insert is further provided for selectively replacing the light-producing insert in the cavity. A practice arrangement utilizing the golf club further includes a target which has a surface for reflecting at least a portion of a light beam produced by the light-producing insert.
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