Because if you did what I suggested with the list, the time to look up the key would be linear in the length of the list. You'd have to look at each element until you found the key.

字典是用一种很神奇的，叫做散列法的算法,来实现的，后面我们将,会学到一点关于。

麻省理工公开课 - 计算机科学及编程导论课程节选

Bind them as a sign on your hand and let them serve as a symbol on your forehead; inscribe them on the doorposts of your house and on your gates.So love and loyalty to God is the foundation of the Torah but Torah is the fulfillment of this love and loyalty: studying it and observing it and teaching it and transmitting it.

也要系在手上为记号，戴在额上为经文,又要写在你房屋的门框上，并你的城门上,那么对上帝的爱和忠诚是律法卷的基础，但律法卷,是这种爱和忠诚的实现：学习它，观察它,教授它，传播它。

耶鲁公开课 - 旧约导论课程节选