"It promises to be one of the great undertakings of the twenty-first century," writes Mr. Baker.(“這絕對是21世紀最偉大的事業之一。”Baker先生說。)

The battle would start the next morning — Sunday, July twenty-first.(這場戰役就要在第二天早晨，即7月21日星期日打響。)

'Twenty-First Century'. In this condition participants were asked about a piece of music that meant a great deal to them.(“二十三世紀”：在這一環節參與者被問及對他們有重要意義的一段音樂。)

Thomas L. Friedman, The World is Flat: A Brief History of the Twenty-first Century, Picador: 2007.(ThomasL.Friedman，世界是平的：二十一世紀簡史，Picador：2007年。)

The development of such a telescope will be one of the great astronomical projects of the twenty-first century.(而開發這樣一臺望遠鏡將會是21世紀天文學的一個重要的研究課題。)

When I had asked her about hers, and she had told me it was the twenty-first of October, she hadn't asked me when mine was.(我問她的生日是什么時候時，她告訴過我是在十月二十一日，她沒有問我的生日。)

All of this is Darwinian thinking and, I think, increasingly will be central in importance in the twenty-first century.(這就是達爾文所思考的，我認為，這在二十一世紀會越來越重要。)

We need to honor their desire to learn useful skills that are going to be relevant to the twenty-first century world.(我們應該尊重他們渴望學習與21世紀世界有關的有用技能的要求。)

Of the millions who sawHaley’s comet in 1986, how many people will live long enough to see itreturn in the twenty-first century.(1986年看見哈雷慧星的千百萬人當中，有多少人能夠長壽到足以目睹它在二十一世紀的回歸呢？)

When her hair is shorn so that her forehead may be branded, she will cry your twenty-first century tears.(她的頭發被剃掉后額頭上就會露出烙印來，她將令你這個二十一世紀的人為她流淚。)