hidden peril of accident meaning in Chinese

交通事故隐患

It is pointed out that , at present , the unusual gas emission is the hardest hidden peril of accident to be cured ; the gas accidents occur easily in such coal mines that are in the phase of capital construction , technological transformation or undergoing structural reform ; hidden perils of gas exist on a wide scale in old mines or the mines being closed down soon ; they also gravely exist in the so - called " star mines " because of their undependable work ; and there are long - term hidden perils of gas accident in the mines in which grave accident frequently occurred , yet no lesson was drawn
指出瓦斯异常涌出是目前最难根治的事故隐患；基建或技改矿井和转制矿井最容易发生瓦斯事故；即将关闭的矿井和衰老的矿井普遍存在瓦斯事故隐患；长期所谓的“明星矿井”工作不踏实，瓦斯事故隐患严重；屡次发生重大事故但不吸取教训的矿井，往往长期存在瓦斯事故隐患。