Fire is the primary hazard associated with gaseous oxygen.

火是同气态氧相联系的主要危险。

youdao

Risk identification, which identifies the hazard types and the hazard sources, is the primary basis of the risk analysis and risk evaluation and the key to achieve successful risk management.

其中风险辨识主要是确定危险种类和危险的来源，是风险分析和风险评价的主要依据，更是风险成败的基础。

youdao