Accidents are caused by either unsafe conditions or unsafe acts 事故是由不安全的条件或行为导致的。
Standard practice for periodic inspection of building facades for unsafe conditions 不安全条件下建筑物正面周期性检验的标准规程
You should not have sold the car in that unsafe condition ; sooner of later you misdeeds will come home to roost 你不该把那辆不安全的汽车卖掉,你的不端行为迟早会得到报应。
You should not have sold the motor - cycle in that unsafe condition ; sooner or later your misdeeds will come home to roost 你不该把那辆不安全的摩托车卖掉,你的不端行为迟早会得到报应。
The backlog of maintenance problems - - called " deferred maintenance " - - led to unsafe conditions in classrooms , offices and laboratories 维护方面的问题的拖延? ? ?也称为“维护滞后” ? ? ?导致了教室、办公室和实验室处于不安全的状况。