Sure, if my son would wake up and I didn't tell him, he wouldn't know that it was duplicate.

当然，如果我儿子醒来,可我还是没告诉他，他不会知道这塔是重新搭的。

耶鲁公开课 - 死亡课程节选

The award-winning online multiplayer game allows the Major League Baseball star to interact anonymously--but still on a personal level--with human beings he wouldn't otherwise know.

FORBES: Magazine Article

Mr Blair (and even his more wonkishly-inclined friend at the Treasury) is like most normal people: he not only lacks such a compass, but wouldn't know what to do with it if he had one.

ECONOMIST: Bagehot: Whatever works | The

Even were he similarly inclined, Obama wouldn't know where to begin.

FORBES: What Next?