It's a central task of safety work to control hazards.
危险源控制是安全工作的中心任务。
Take measures to control hazards and protect the rescuers first.
应先采取措施控制住危险并保护施救者。
That can prevent and control occupational hazards by enhance the safety protection.
加强安全防护，能有效地预防和控制其职业危害。
That can prevent and control occupational hazards by enhance the safety protection.
加强安全防护，能有效地预防和控制其职业危害。
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