bushing bearing

例句：

1. 1. The machine needsa new bearing to run smoothly.
   这台机器需要更换新的轴承才能顺畅运行。
2. 2.The engineer carefully inspected the bushingbefore installing it.
   工程师在安装之前仔细检查了衬套。
3. 3. The roller bearingsare designed to reduce friction and improve efficiency.
   滚珠轴承的设计旨在减少摩擦并提高效率。