| 摘要 |
The invention relates to a playing arena (10), where a level playing area (30) with an edge which has no corners, and a sheath (20), which has cross sections without corners both longitudinally and transversely and which is adjacent to the edge of the flat playing area (32), where the transition from the flat playing area (30) to the sheath (20) in the region of the edge of the playing area (30) has been rounded off in the manner of a banked curve (34). |
