求翻译：项目开工前,项目经理应组织相关人员对本项目所有危险因素进行辨识，通过辨识形成《危险源清单》，并根据重要危险源制订控制方案、管理制度、预防措施。是什么意思？

Project pre-construction, the project manager should organize all relevant personnel on this project to identify risk factors, identified by the formation of "dangerous source list", and according to major hazard control program development, management systems, preventive measures.

Before commencement of the project, the project manager should be relevant to the project staff to identify all risk factors for discerning formation, through the source of danger, and on the basis of lists drawn up an important source of danger control programs, management systems, preventive measu

Before the project operation, project manager should organize the correlation personnel to carry on the identification to this project all dangerous factors, forms "Dangerous Source Detailed list" through the identification, and according to important dangerous source making control plan, control sy

Before the project starts, the project manager should organize staff on this project all the risk factors related to identification, formed by identification of the dangerous source list, and made under major hazard control programmes, management systems, precautionary measures.

Project pre-construction, the project manager should organize all relevant personnel on this project to identify risk factors, identified by the formation of "dangerous source list", and according to major hazard control program development, management systems, preventive measures.