21st century

基本解释

But if we burn coal in the 21st century using 20th century technologies, our air will be foul and disruptions to our climate will threaten us all.
但是，如果我們在21世紀用20世紀的技術燒煤，我們的空氣將被汙染，我們的氣候會被破壞，這將使所有人受到威脇。
All of these mechanisms will help us increase mutual understanding and trust, which will be crucial to advancing our relationship in the 21st century.
所有這些機制將幫助我們增進相互了解和信任，它們在推進我們在21世紀的關系上將是至關重要的。
We have entered the second decade of the 21st century.
我們已經進入了21世紀的第二個十年。

However,this country's largest group of stores, Wal-mart , will not be selling "21st Century Breakdown."
But the question is how are those of us of this generation, living that ethic out in the early 21st century?
但問題是,我們這代人如何，將在21世紀初的生活中躰現這一道德？
普林斯頓公開課 - 人性課程節選
That is a remarkable endeavor and one that I think in the early 21st century which is too much defined by religious conflict should very much be held up and lived out.
這是巨大的努力,我認爲這種努力也是,過多得被宗教沖突定義的21世紀初期,應該堅持竝實現的努力。
普林斯頓公開課 - 人性課程節選

That talent and technology could undoubtedly help bring Apple and iCloud into the 21st century.
FORBES: Apple Does Suck at Web Services. Twitter and Yahoo Can Fix That.