relay board

例句：

1. 1.The athletes lined up on the relay board, ready to start the race.
   运动员们排成一队站在接力板上，准备开始比赛。
2. 2. The coach gave the signal and the athletes ran onto the relay board.
   教练发出信号，运动员们跑上接力板。
3. 3. The runners crossed the finish line and handed the relay board to their teammates.
   跑步者冲过终点线，将接力棒交给队友。