他们正在调查这起人身事故的原因。

They are investigating the cause of the casualty.

这次火灾中有几起人身事故。

There were several casualties in the fire.

这次车祸造成了多起人身事故。

The car accident resulted in multiple casualties.

工地上的人身事故数量有所减少。

The number of casualties on the construction site has decreased.

由于安全措施到位，没有发生人身事故。

No casualties occurred due to proper safety measures.

其目的是为了减少不必要的人为工作，降低可能的失误概率，避免意外情况下人身事故的发生。

It can reduce the operations executed by the person on duty, inevitably depress mistakes happen and decrease the workload of the person on duty.