Now Jon Mitchell from the University of Chicago thinks he has cracked it.

现在，芝加哥大学乔恩·米切尔认为他已经破解了。

youdao

But if you really look around, it's hard to go anywhere in Hollywood now without bumping into a beard: Zac Efron, Jon Hamm, Conan o 'brien, and George Clooney have all recently sported them.

但如果你认真看看身边，现在在好莱坞很难遇上谁不蓄胡子的：扎克。埃夫隆，种。哈姆，科南。奥贝恩和乔治·克鲁尼最近都爱蓄须。

youdao

Jon Scieszka, previously an elementary school teacher and now a bestselling children's book author with over 25 titles, has been given a title of his own.

乔恩·查斯卡，以前是位小学教师，现在是一位儿童畅销书作家，出版了超过25部作品。

youdao

Now comes Jon M.

FORBES: Shark Attack

There are roughly 70 million smart cards with electronic purse applications being used throughout Europe now, said Jon Prideaux, executive vice president for new products at Visa International in Europe.

CNN: Will smart cards replace ATMs?

I've answered this now twice, Jon.

WHITEHOUSE: Press Briefing