relay marking

例句：

1. 1.The relay team members lined up in a neat row.
   接力队员整齐地排成一行。
2. 2.The relay race was the highlight of the event.
   接力赛是该活动最精彩的部分。
3. 3. The relay runners crossed the finish line together.
   接力跑者一起冲过终点线。