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五彩弹球
- 该程序中有8个彩球,用弹性绳互相连接,当拉任意球偏离其位置后可以模拟弹性绳相连的小球恢复其原来位置-the procedures are eight color ball, elastic rope connected Rafah when a free kick from its location can be simulated elastic ropes connected to the small ball to restore their original position