inevitable accident

名词 inevitable accident:

1. a natural and unavoidable catastrophe that interrupts the expected course of events
   同义词：act of God, force majeure, vis major, unavoidable casualty

1. The present railway collision is an inevitable accident in the eye of law.
   此次火车相撞事件，就法律观点来看是一场无法避免的灾祸。