It would be wonderful to observe a singularity and obtain direct evidence of the undoubtedly bizarre phenomena that occur near one.(如果能觀察到一顆奇點，并獲取關于奇點附近出現的可信的怪異現象的直接證據，那將非常好。)

If I were to fall from one of these great clods, I should undoubtedly break my neck.(如果我從這些大土塊上掉下來，我一定會摔斷脖子的。)

She loved to give them medicine, and undoubtedly gave them too much.(她喜歡給他們藥，而且無疑給他們太多了。)

It was undoubtedly a whale that linked life on land with life at sea.(毫無疑問，這是一種聯系著陸地生命和海洋生命的鯨魚。)

Dali's shoe hat was undoubtedly the most surrealist idea he ever worked on with Schiaparelli.(達利的鞋狀帽子無疑是他與夏帕瑞麗合作創造的最超現實主義的作品。)

Undoubtedly the grimmest part of him was his iron claw.(毫無疑問，他身上最可怕的部分是他的鐵爪。)

Undoubtedly, the drawer of the picture aims at reminding us that we should use technology in a proper way and not be too tech-dependent to solve the simple problem independently.(毫無疑問，圖畫的作者旨在提醒我們應該合理使用技術，過度依賴技術就會喪失獨立解決問題的能力。)

The story was certainly a favourite one, but it was undoubtedly pure invention.(這個故事的確是人們最喜歡的一個，但毫無疑問它純粹是虛構的。)

If a few thick pillars had not been left supporting the rest, it would undoubtedly have tumbled down.(如果沒有幾根粗大的柱子支撐這殘骸，它肯定會倒下來。)

Internet is undoubtedly the best way to find information on almost any matter.(毫無疑問，因特網是幾乎查詢任何事情信息的最佳途徑。)

用作副詞(adv.)

He's undoubtedly right.
毫無疑問，他是正確的。There is undoubtedly a great deal of truth in what he says.
他所說的的確大部分都是實情。

He was..undoubtedly a man of much courage.