yoke key

例句：

1. 1. The yoke key is used to secure the horses in the stable.
   轭钥匙用来将马拴在马厩里。
2. 2. She carried the yoke key with her everywhere she went.
   她随身携带着轭钥匙，走到哪里都带着它。
3. 3. The yoke key was a symbol of authority and control over the horse.
   轭钥匙象征着对马匹的权威和控制。