求翻译：而随后，国家安监总局新闻宣传处工作人员表示，动车事故书面调查报告尚未形成。至于什么时候调查能结束，工作人员表示尚不清楚。“9月15日”的时间节点系媒体自行理解。是什么意思？

And then, the State Administration of Work Safety said the Press and Information Office staff, motor car accident a written report has not yet formed. As for when the investigation will end, the staff that is not clear. "September 15" on their own time to understand the media node system.

Subsequently, the State Administration of Work Safety Supervision and the Press and Information Office, said the staff car accident investigation report writing have not yet formed. As for when it can be concluded that the staff said it is still not clear. " " On 15 September, the time understanding

But afterwards, the National Peaceful Jail Bureau news propaganda section staff indicated that, moves the vehicle accident written report of investigation not yet the formation.When as for investigates can finish, the staff expressed not not clearly still.“On September 15” the time festival point-sy

Subsequently, State administration of safety supervision of news propaganda Department staff, motor car accident in writing investigation report has not yet been formed. When investigations can end, the staff said it was not clear. "September 15" node of the media on their own understanding of time.

Subsequently, State administration of safety supervision of news propaganda Department staff, motor car accident in writing investigation report has not yet been formed. When investigations can end, the staff said it was not clear. "September 15" node of the media on their own understanding of time.