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帮云友翻译下：

Ground collision is one of the most common occurrence in aviation accidents. For example, the aircraft collided with another aircraft, the aircraft collided with ground vehicles such as tugs, shuttle buses, follow-me cars and so on. The aircraft collided with the ground equipment such as bridges.
地面相撞是航空事故中最常见的事件之一。比如，飞机与其他的飞机相撞，飞机与地面车辆（拖车，摆渡车，引导车等）相撞，飞机与地面设备（廊桥）相撞。

There are some possible reasons for ground collisions. First, bad weather, especially poor visibility may lead to ground collisions. Second, mechanical problem such as inoperative brakes and steering may cause ground collisions. Third, human errors may cause ground collisions. For example, there may be misunderstanding between the pilots and controllers. Besides, there are some other reasons for ground collisions.
很多原因可能导致地面事故。第一，恶劣天气，特别是低能见度可能导致地面相撞；第二，机械故障可能导致地面相撞，比如，如果刹车和转向失效；第三，人为差错可能导致地面相撞，比如飞行员和管制员理解失误。此外，还有一些其它原因可能导致地面相撞。

To avoid ground collisions, First, when we are moving on the ground, we should be careful, especially in bad weather conditions. Second, we should follow ATC instructions and regulation strictly. Third, we should have good situational awareness. Fourth, modern technology can be used to avoid ground collision such as ground movement guidance and control system (SMGCS), the aircraft can follow the greens to avoid ground collision.
为了避免地面相撞，首先，我们在地面移动时，特别是恶劣天气情况下，我们应该小心。第二，我们应该严格遵循管制指令和规章制度；第三，我们应该具有良好的情景意识。第四，现代技术可以用来避免地面相撞，比如，地面活动引导与控制系统，飞机可以沿绿线滑行避免地面相撞。

If ground collision occurs, the pilots must stop the aircraft immediately, report the situation to ATC and request ground services such as tugs, passenger stairs and shuttle buses and so on.
如果发生地面相撞，飞行员应该马上停下飞机，报告管制情况，请求地面服务，比如拖车，客梯车和摆渡车等。

【Key Words and Expressions重点词汇与词组】

ground collision  地面相撞
occurrence      事件
collide with     与……相撞
ground vehicle   地面车辆
ground truck     地面车辆
tug             拖车
passenger stairs   客梯车
passenger steps   客梯车
shuttle bus       摆渡车
coach           大巴车
follow-me car    引导车
catering truck     餐车
de-icing vehicle   除冰车

snow plough     犁雪车
snow blower     吹雪车
bird-dispersing car  驱鸟车
bridge           廊桥
ground staff      地面人员
maintenance staff  维修人员
ground personnel  地面人员
tug driver        拖车司机
mechanical problems  机械故障

inoperative          失效
unserviceable        失效
steering             转向
brakes/braking       刹车
human error         人为差错
misunderstanding    理解错误

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