The cause of the accident was not immediately apparent.
这次事故的起因并非即刻可明。
An inquiry was set up to determine the cause of the accident.
已展开调查以确定事故原因。
Police are still trying to establish the cause of the accident.
警方仍在努力确定事故的原因。
An official inquiry has been launched into the cause of the accident.
当局已对事故的原因展开调查。
The newspapers provided little enlightenment about the cause of the accident.
报章对事故原因并未解释清楚。
Pilot error, to wit failure to follow procedures, was the cause of the accident.
飞行员的失误，即没有遵守操作程序，是事故的原因。
Renovation workers of Notre Dame Cathedral were questioned to find out the cause of the accident.
为了查明事故原因，巴黎圣母院的翻修工人接受了询问。
What was the cause of the accident?
事故发生的原因是什么？
What was the cause of the accident ?
这次事故的起因是什么？
The dog was the cause of the accident.
这只狗是造成交通事故的原因。
The cause of the accident remains unknown.
事故的原因仍不清楚。
His drinking was the cause of the accident.
他饮酒是这个事故的原因。
His drinking was the cause of the accident.
吸烟是引起心脏病的一种原因。
The cause of the accident is under investigation.
截至8日早6时30分，大火仍在燃烧，事故原因正在调查中。
The cause of the accident is still not known.
事故的原因仍未搞清。
We are investigating the cause of the accident.
我们正在调查意外事件的原因。
We have to look into the cause of the accident.
我们必须调查这一事故的原因。
The cause of the accident is being investigated.
事故原因正在进一步调查中。
We are investigating the cause of the accident .
我们正在调查意外事件的原因。
At last they found out the cause of the accident.
最终他们查出了事故的起因。
The cause of the accident was under investigation.
事故原因还在调查之中。
The cause of the accident is under investigation.
事故原因还在调查中。
The cause of the accident was the brake of the car.
这个事故的原因是汽车的刹车问题。
The group is looking into the cause of the accident.
这个小组正在调查事故的原因。
It's difficult to pinpoint the cause of the accident.
很难清楚地找到事故发生的原因。
The driver 's negligence was the cause of the accident.
驾驶员的疏忽是这次事故的起因。
The cause of the accident is still under investigation.
事故原因仍在调查之中。
The committee is looking into the cause of the accident.
委员会正在调查事故的原因。
Investigators are trying to pinpoint the cause of the accident.
调查人员正力图准确地查出事故的原因。
Investigators are trying to pinpoint the cause of the accident.
调查人员正力图准确地查出事故的原因。
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