concrete curb

例句：

1. 1. The construction crew was busy installing the concrete curbs around the park.
   施工队伍忙于在公园周围安装混凝土路缘石。
2. 2. The new road is lined with concrete curbs to improve safety.
   新路沿线安装了混凝土路缘石，以提升安全性。
3. 3. The city officials are considering replacing the old concrete curbs with more durable materials.
   市政府官员正在考虑用更耐用的材料替换旧的混凝土路缘石。