"In all my years of fry cookery, I have never seen such a lovely group of patties.

VOA: special.2009.08.21

Now, if you have never seen that Prisoner's Dilemma, you can see it pretty much every night on a show called Law & Order.

如果你之前没听说过囚徒困境,回去看看每天晚上演的"法制"

耶鲁公开课 - 博弈论课程节选

This would be good luck if you were long and now suddenly you got a huge return that you would not have thought was possible since you've never seen it before.

如果你长期持有这份投资,你就走运了,回报如此之高,你自己都没有料到,可能你也从来没有见过这种情况

耶鲁公开课 - 金融市场课程节选

"Avatar" uses special effects that have never been seen before in a movie.

VOA: special.2010.01.01

The two biggest fears of children in urban Chicago are that snakes and spiders, even though many of these children have probably never seen a snake outside of a zoo in their lives.

芝加哥市区孩子最害怕的两样是,蛇和蜘蛛，甚至这些孩子,从未在动物园以外的地方见过蛇。

耶鲁公开课 - 心理学导论课程节选