The driver 's negligence was the cause of the accident . 驾驶员的疏忽是这次事故的起因。
3.
What was the cause of the accident 事故因何而起？ (什么是事故的起因？
4.
The old man kept bumbling on about how the accident occurred 老人喃喃不清地叙述着事故的起因。
5.
The cause of the crash remains unclear 事故的起因还不明朗。
6.
It is believed that the gas leakage was caused by the person who attempted to repair the vehicle and loosened the screws of the gas filter 事故的起因相信是有人在尝试自行维修汽车时扭松石油气隔滤器的螺丝，引致石油气泄漏。
