OK, you say, come on, I've seen these all the time. Every time I type something into my program, it does one of these things, right?
好了，或者你要说，我总是能看见这些，每一次我在程序里输入一些内容的时候？
A pure functional language like Haskell might offer type hierarchies, discriminated unions, quantification, existential types, and so on, but OOP languages typically lack these things.
象Haskell那样的纯函数型语言可以提供类型层次结构、区别合并、量化、存在类型等等，但OOP语言通常缺乏这些功能。
Let's explore these visibility options in more detail. To keep things simple, we'll use fields for member examples. Method and type declarations behave the same way.
让我们来仔细探索一下这些可见性选项。为了简单，我们会使用字段来作为成员的例子。方法，类型声明的行为和字段是一致的。
These things can be bought or you can find a free program online that does the same type of thing.
这些东西可以花钱买或者去可以去网上下载一个免费的程序做这个工作。
Now, the relationships of all things or phenomena are of these two kinds; there is not a third type.
所有的事物或现象之间的关系不外乎这两种，再没有第三种。
How do you perform in that type of setting? These are things to take note of when you go in for your interview.
你在这种布局下感觉如何？这些都是你参加面试时需要注意的事情。
How do you perform in that type of setting? These are things to take note of when you go in for your interview.
你在这种布局下感觉如何？这些都是你参加面试时需要注意的事情。
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