runner seal ring

例句：

1. 1. The runner's sealring is a crucial component of the race.
   跑者的密封环是比赛的关键组成部分。
2. 2. Therunner's seal ring was designedto prevent theft during the event.
   跑者的密封环被设计成在活动中防止盗窃。
3. 3. The runner's seal ringwas used to secure the runner's equipment during the race.
   跑者的密封环被用来在比赛中固定跑者的装备。