来自《耶鲁大学开放课程：有关食物的心理学、生物学和政治学 第19集 第19集》
-
or it could be more sophisticated like a red light that comes on,或者高级点 一个红色指示灯 -
that tells you that there's a bullet in the gun.指示灯亮了即说明枪里还有子弹 -
Would you buy a camera你会买一个 -
that didn't tell you whether there was film in the camera?不能提示你里面是否有胶卷的相机吗 -
Would you buy a car你会买一个 -
that wouldn't tell you whether you had gas in your gas tank?不能提示你油箱里是否有汽油的汽车吗 -
I don't think so,我觉得你不会买的 -
but everyday people buy guns但是人们平时买的枪 -
that don't tell them that there's a round in the chamber,却不能提示他们枪膛里是否有子弹 -
a bullet in the gun,枪里是否有子弹 -
even though the device that would tell you is尽管这个能提示你的仪器是 -
something that was patented more than a century ago一百年前就获得专利的东西