The company was guilty of gross negligence.

该公司犯了重大的失职罪。

《柯林斯英汉双解大词典》

BP denies gross negligence, which would greatly increase the fines that it faces as well as excusing its partners from having to contribute.

BP否认存在严重疏忽，否则将会大大增加其所面临的罚金，同时会使其合作商免除处罚责任。

youdao

A holder who, by gross negligence, acquires a negotiable instrument that is not in conformity with the provisions of this Law, shall have no tight thereon, either.

持票人因重大过失取得不符合本法规定的票据的，也不得享有票据权利。

youdao

The CDA has most frequently been used as a defense against claims of defamation, but the broad immunity provided by the mighty CDA has also barred claims of false information, negligence, gross negligence, misrepresentation, invasion of privacy, misappropriation, fraud, breach of contract, unfair competition, emotional distress, nuisance, tortious interference with business relations, tortious interference with business expectancy, violation of civil rights, money laundering, threats, discriminatory statements, waste of public funds, nuisance, premises liability and denial of substantive due process.

FORBES: What Is The CDA And How Can It Help You And Your Company Avoid Liability?

Do you think at this point in time that that gross negligence bar has been reached?

WHITEHOUSE: Vice President Biden on Congressman Barton��s Apology to BP

"A young child was needlessly killed because of that gross negligence, " said Mr Cox.

BBC: Meg Burgess