bus coupler

例句：

1. 1.The bus coupler was designed to connect the bus to the rails.
   公交车连接器的设计是为了将公交车连接到轨道上。
2. 2. The bus coupler was a crucial component in the design of the new bus system.
   公交车连接器是新公交系统设计中的关键部件。
3. 3.The bus coupler was responsible for ensuring the safety and reliability of the bus system.
   公交车连接器负责确保公交系统的安全和可靠性。