precast reinforced concretesupport

例句：

1. 1.The construction crew was working on a precast concrete bridge.
   施工队正在建造一座预制混凝土桥。
2. 2. The precast concrete blocks are easy to install and maintain.
   预制混凝土块易于安装和维护。
3. 3. Precast concrete is commonly used in construction due to its strength and durability.
   由于其强度和耐用性，预制混凝土常用于建筑中。