fire-proof frame

• 防火构架

fire-proof frame的用法和样例：

例句

1. The wooden frame of the house is already in place.
   房屋的木构架已经搭好。
2. These nonrestrictive units had concrete floors on an interior steel frame.
   这些非抗震单元在内部为钢构架上是水泥地板。