火车相撞
4.If someone gets drunk and pulls the wrong switch, he can cause a collision. 
5.The present railway collision is an inevitable accident in the eye of law.
7.The goal of the railroad engineers in crafting this code was to prevent often fatal train collisions, by giving the trains advance warning.
8.An accident of the collision of a truck with a train has disrupted railway services into and out of the city.
9.As soon as the engineer saw another train approaching, he reversed his engine and prevented a collision.
10.In 1987, sixteen people were killed when an Amtrak train bound from Washington to Boston collided with Conrail engines approaching from a side track in Chase, Maryland.
