heavy mortar

例句：

1. 1. The construction crew used heavy mortar to build the foundation of the new building.
   建筑工人使用重砂浆来建造新大楼的基础。
2. 2. He poured a layer of heavy mortar on the wall before painting it.
   他在墙上涂漆前，先涂抹了一层重砂浆。
3. 3.The heavy mortar made it difficult for the workers to move around the site.
   沉重的砂浆让工人们难以在工地上移动。