(subclass WaterBoard BoardOrBlock) | Sports.kif 1266-1266 | WaterBoard 是 板或块 的 subclass |
(subclass Surfboard WaterBoard) | Sports.kif 210-210 | Surfboard 是 WaterBoard 的 subclass |
(subclass WindSurfingBoard WaterBoard) | Sports.kif 1279-1279 | WindSurfingBoard 是 WaterBoard 的 subclass |