n.确定，确信，确实的事

原形：certitude复数：certitudes

He spoke with such certitude that everyone believed him.
他说话如此肯定，以至于每个人都相信了他。
The scientist expressed certitude in her research findings.
科学家对她的研究发现表示了确信。
His tone of voice conveyed absolute certitude.
他的语气传达了绝对的确定性。
Despite the lack of evidence, he maintained his certitude about the existence of extraterrestrial life.
尽管缺乏证据，他仍坚持对外星生命存在的确信。
The historian's claims were based on thorough research and a sense of certitude.
历史学家的论断基于详尽的研究和确信的感觉。
She answered the question with such certitude that no one dared to challenge her.
她回答问题时如此肯定，以至于没有人敢质疑她。
The witness testified with certitude about the events of that night.
目击者对那晚发生的事件作了肯定的证词。
His certitude in his beliefs gave him strength during difficult times.
对自己信念的坚定给了他在困难时期的力量。
The mathematician proved the theorem with absolute certitude.
数学家以绝对的确定性证明了这个定理。
It is not always wise to act on first impressions or assumptions of certitude.
根据第一印象或自认为的确定性行事并不总是明智的。