Such examples abound in life, in the actual design is also often have similar applications, of which about what reason?
这样的例子在生活中不胜枚举，在实际的设计中也常会有类似的应用，这其中的道理何在呢？
Many also have the "library" in their titles, such as library and Educational Media. We will provide a consistent definition and examples of the field.
也有很常时候出现“库”在标题内，我们将提供一个贯用的定义和例子。
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