In a civil lawsuit, a plaintiff who files a lawsuit against someone for being the cause of an accident needs to provide evidence to back up their accusation.

在民事诉讼中，原告若要提起诉讼，应提供造成事故原因的证据来支撑其控告。 %。

youdao

An inquiry was set up to determine the cause of the accident.

已展开调查以确定事故原因。

《牛津词典》

An official inquiry has been launched into the cause of the accident.

当局已对事故的原因展开调查。

《牛津词典》

Human error is the most likely cause of an accident.

FORBES: Why Solar Energy Sucks But May Save Us Anyway

Officers were trying to determine the cause of the blaze, which wasn't the result of an accident.

NPR: Patrol: 5 Die In Limousine Fire On Calif. Bridge

Although larger ships would cause more environmental damage and create an enormous rescue challenge in case of an accident, they also offer greater comfort and more amenities.

BBC: Planning your dream Antarctic vacation