medullin

例句：

1. 1.The medullin in the middle of the room is causing a lot of noise.
   房间里中间的马德林引起了很多噪音。
2. 2. The medullin was so thick that it blocked the way.
   马德林太厚了，以至于堵住了路。
3. 3. The medullin was used to make shoes and boots.
   马德林被用来制作鞋子和靴子。