cross ring flexible joint

例句：

1. 1. The engineer designed a cross ring to connect the two beams.
   工程师设计了一个十字环来连接两根梁。
2. 2.The car's suspension system uses a flexible joint for better handling.
   汽车的悬挂系统使用一个可弯曲的关节以获得更好的操控性能。
3. 3. The robot has a mechanism that allows it to perform complex tasks with ease.
   这个机器人有一个机制，可以轻松地执行复杂的任务。