(Brit.)denoting a hospital department concerned with the provision of immediate treatment to people who are seriously injured in an accident or who are suddenly taken seriously ill(英)急诊室
an accident waiting to happen
(informal)a potentially disastrous situation, typically caused by negligent or faulty procedures(非正式)（尤指由于疏忽大意或程序错误而造成的）隐患
accidents will happen in the best regulated famili
(proverb)however careful you try to be, it is inevitable that some unfortunate or unforeseen events will occur(谚)家规再严，事端难免
without accident
safely安全地
柯林斯高阶英汉双解学习词典释义
N-COUNT
交通事故；车祸
An accident happens when a vehicle hits a person, an object, or another vehicle, causing injury or damage.
If you describe something or someone as an accident waiting to happen, you mean that they are likely to be a cause of danger in the future, for example because they are in poor condition or behave in an unpredictable way.
You begin a sentence with 'it's no accident' if you want to suggest that something was done deliberately or has a logical explanation, although it might give the impression of having happened by chance.