(subclass WaterBoard BoardOrBlock) | Sports.kif 1265-1265 | WaterBoard 是 板或块 的 subclass |
(subclass Surfboard WaterBoard) | Sports.kif 210-210 | Surfboard 是 WaterBoard 的 subclass |
(subclass WindSurfingBoard WaterBoard) | Sports.kif 1278-1278 | WindSurfingBoard 是 WaterBoard 的 subclass |