iron bridge

基本解释

There are also new neighborhood decorations (among which a wooden rabbit) and a cute new iron bridge.
也有新的公共建筑（一个兔子洞）和一个新的铁桥。
This is the high-iron bridge, take the train of my favorite sites, here are the only S-type in our city railway.
这就是高铁桥，我最喜欢的拍车地点，这里有我们这唯一S型铁路。
Its whistle shrilling , the train was passing over an iron bridge. The door handle, the steel floor and their shoulders were bouncing with the motion of the train.
列车正轰鸣着开过一架铁桥，车门上的把手、铁踏板和乌蒙蒙的玻璃窗都在震响着，他们的肩头也在随着晃动着。

So you pick a better material like iron and steel, that makes a better bridge, we know that now because we have experience with bridges, but still your bridge might fail.
你选择了钢铁作为材料,来造了一座更好的桥,我们现在能够明晰这一点,是因为在造桥这件事上我们现在很有经验,但即使是我们现在造的桥也仍然会倒塌
耶鲁公开课 - 生物医学工程探索课程节选

Loren and I walked the railroad tracks along the river coming back from fishing the big pool under the old iron bridge, and I couldn't remember a lovelier evening before or after our world changed.
NPR: Excerpt: 'World Made By Hand'

铁桥
The final part is a conclusion, which bases on the integral evaluation of the Lanzhou Iron Bridge.
最后,在兰州黄河铁桥综合评价基础上对全文研究作出总结。