crown rail-bond

例句：

1. 1.The crown rail-bond is designed to protect the building from damage.
   皇冠栏杆的设计是为了保护建筑物免受损害。
2. 2. The rail-bond was installed to enhance the safety of the pedestrian area.
   安装栏杆是为了增强行人区域的安全保障。
3. 3. The crown rail-bond has been a popular choice for many homeowners due to its aesthetic appeal and durability.
   许多房主选择皇冠栏杆，因为它的美观性和耐用性。