Occupational injuries were caused by environmental risk factors such as equipment defects, management and organization of the production and human factors.
工伤事故由多种因素造成，包括人为因素、机器设备缺陷、环境因素、生产组织与管理等方面。
2
Forest fires have caused huge losses to human life and property, so forest fire prediction and risk assessment becomes very urgent and necessary.
森林火灾给人类生命和财产造成了巨大的损失，因此对森林火灾的预测和风险评价显得十分迫切和重要。
3
The riskcaused by microbiological hazards in food is very concerned to human health.