| 摘要 |
A playing surface may include a first boundary wall, a second boundary wall, a first zone separator and a second zone separator. The second zone separator may be spaced apart from the first zone separator in order to provide a first zone area residing between the first zone separator and the second zone separator. The zone separators may each have an angled surface which are positioned so that a sphere may be rolled toward the angled surface of the zone separator, roll over the zone separator and into a zone area.
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