mud polygon

例句：

1. 1. The mud polygons were used to build the wallsof the house.
   这些泥瓦工被用来建造房子的墙壁。
2. 2. Thebricklayers were busy workingon the new building.
   砖瓦匠们忙于修建新建筑。
3. 3. Thebrick mason was responsible for laying thebricks in the wall.
   砖瓦匠负责在墙上铺设砖块。