fire-resisting beam

例句：

1. 1.The engineer designed a fire-resistant beam to withstand high temperatures.
   工程师设计了一种防火梁，能够承受高温。
2. 2.The construction firm used fire-resistant beams in their new office building.
   建筑公司在其新办公楼中使用了防火梁。
3. 3. The firefighters used fire-resistant beams to reinforce the structure during the blaze.
   消防员使用防火梁加固了建筑物的结构，以抵御大火。