| 摘要 |
A golf ball comprising a solid core, an outer cover layer, and a casing disposed between the core and the outer cover layer, wherein the core has an outer diameter of no greater than about 1.58 inches; the casing has an outer diameter of greater than 1.58 inches and a material hardness of between about 30 and about 70 Shore D; and the outer cover layer has a material hardness of less than about 45 Shore D.
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