joint bearing

例句：

1. 1. The joint bearing in the machine is causing problems.
   机器中的关节轴承出了问题。
2. 2.The engineers designed a new joint bearing to improve efficiency.
   工程师们设计了一种新的关节轴承以提高效率。
3. 3. The joint bearing was replaced after several years of use.
   经过几年的使用后，关节轴承被更换了。