Collision safety of bus has been paid much attention in recent years, roll-over collision is one of the highest casualty ratio condition in traffic accidents.
大客车的碰撞安全性问题是近几年来人们普遍关注的问题，而客车的翻滚碰撞是事故伤亡率较高的一种情况。
Collision safety of bus has been paid much attention in recent years, roll-over collision is one of the highest casualty ratio condition in traffic accidents.
大客车的碰撞安全性问题是近几年来人们普遍关注的问题，而客车的翻滚碰撞是事故伤亡率较高的一种情况。
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