She dismissed his assertion as baseless.

她驳斥了他的断言，认为其没有根据。

He challenged the professor's assertion in class.

他在课堂上挑战了教授的断言。

He made a bold assertion during the meeting.

他在会议上提出了一个大胆的声明。

The witness made a firm assertion under oath.

证人在宣誓后坚定地提出了声明。

The lawyer presented a strong legal assertion in court.

律师在法庭上提出了一项有力的法律主张。

The scientist's groundbreaking assertion was published in a prestigious journal.

科学家具有开创性的声明发表在一本享有声望的期刊上。

She refused to retract her assertion despite the evidence against it.

尽管有不利于她的证据，她拒绝收回她的声明。

The company's new policy is based on a key business assertion.

公司的新政策是基于一个关键的商业主张。

The team leader issued a clear assertion about the project's deadline.

团队领导对项目的截止日期提出了明确的声明。

I make the assertion that this project can be completed by next month.

我断言这个项目可以在下个月完成。