铁架

例句：

1. 1. The construction ofthe bridge required a strong iron frame.
   建造这座桥需要坚固的铁架。
2. 2. Thescientist used an iron frame to support hisheavy equipment.
   科学家用铁架支撑他的重型设备。
3. 3. The old house was built withiron frames, which made it sturdy anddurable.
   这所老房子是用铁架建造的，因此它既坚固又耐用。