four eyed joining piece

例句：

1. 1. The engineer used a four-eye connecting piece to connect the two pieces of equipment together.
   工程师使用一个四眼连接件将两台设备连接在一起。
2. 2. The four-eye joint was designed to provide a secure and reliable connection between the two parts of the machine.
   这个四眼连接件被设计用来在机器的两部分之间提供一种安全且可靠的连接。
3. 3. The four-eye joint is commonly used in industrial machinery to ensure smooth movement and avoid potential damage.
   四眼连接件在工业机械中被广泛使用，以确保运动的平滑和避免潜在的损害。