They didn't call him the iron horse for nothing.

不然也不会被人称作火车了。

Early steam engines like this were often called " iron horses."

像这样的早期蒸汽机通常被称为“铁马”。

In the modern era, the iron horse is still chugging along under its own steam.

时至今日，铁马依然在自己的风口浪尖前行。

The driver of the slow-moving wagon train has given way to the engineer at the throttle of his iron horse and the air pilot in the cockpit of his plane.

缓慢行驶的马车队车夫已经被操控火车头油门的工程师和飞机驾驶舱里的驾驶员所取代。