求翻译：Cheng witnesses, the accident occurred about 6 o'clock last night, when the white Poussin Driving this car from west to east in the coach car on the road traveling Jiangning integrity, when driving to the riverside stretch of road near the school, I do not know why the sudden loss of vehicle control and hit the street the way teeth and eventually overturned. It is understood that the coach is a 20-year-old guy, he crawled out from the cab, three female students and subsequently crack the glass, climbed out the window. For the cause of the accident, driving the coach said, when he was fast approaching to avoid the motorcycle in front of a sharp reversal of direction, the right rear wheel ringing off the hook before the car overturned.是什么意思？

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