I lost my sight when I was four years old by falling off a boxcar in a freight yard in Atlantic City and landing on my head.
四岁时，在亚特兰大城，我从货场一辆货车上摔下来撞倒头，于是便失去了光明。
2
When the train runs slowly, the aerodynamic forces acting on the boxcar decreases, which is helpful to the train passing safely the bridge of wind zone.
而列车的减速运行，将使棚车所受到的气动力和倾覆力矩降低，有助于棚车安全通过风区桥梁。
3
A control box fitted to the car contains a mini-cellphone, a microprocessor and memory, and a GPS satellite positioning receiver.