reinforced concrete fence

例句：

1. 1.The new fence is made of reinforcedconcrete and looks very sturdy.
   新围栏是用加固混凝土制成的，看起来非常坚固。
2. 2. The fencewas reinforced with steel bars to preventthe animals from getting through.
   这道围栏用钢筋加固，以防止动物穿过。
3. 3. The fencewas designed to keep the children safe whileplaying in the park.
   这道围栏设计用来在公园里玩耍时保护孩子们的安全。