fine concrete

例句：

1. 1. The construction crew used fine concrete to build the foundation of the new hospital.
   建筑队使用细混凝土建造了新医院的地基。
2. 2. Fine concrete is often used in architectural designs to enhance structural integrity.
   细混凝土常用于建筑设计中，以增强结构完整性。
3. 3. The engineers decided to use fine concrete instead of traditional materials for the project's exterior walls.
   工程师们决定使用细混凝土而不是传统材料来建造项目的外墙。