porous bushing

例句：

1. 1. The new car has a porousbushing that helps it run smoothly.
   新车有一个多孔衬垫，有助于它平稳运行。
2. 2. Theengineer used a porous bushing to seal the leaky pipe.
   工程师使用一个多孔衬垫来密封漏管。
3. 3. The porous bushingis designed to prevent water from seepingthrough.
   这个多孔衬垫的设计是为了防止水渗透。