Neurons have these projections because one important property, or one important function of neurons, is to communicate with each other.

这些突起,源于神经细胞,一项重要的性质,或者说一项重要的功能,那就是实现信息的交流

耶鲁公开课 - 生物医学工程探索课程节选

And it was fun for us but thankfully, we didn't have to implement all this stuff ourselves.

这对我们也许是有趣的，但幸运的是,我们不需要自己实现所有的功能。

哈佛公开课 - 计算机科学课程节选

Another way of saying it is, anything that uses get float doesn't care what the details are inside or shouldn't, and if I change that definition, I don't have to change anything elsewhere in my code, whereas if I just have the raw code in there, I have to go off and do it.

换种说法就是，任何用到获取,输入这个功能的人不用担心具体的实现细节,如果我改变了这里的实现，我并不需要去改变我的代码,因为我的最底处的源码就在这里,我去改这里就可以了。

麻省理工公开课 - 计算机科学及编程导论课程节选