first-class objects 一级对象
Learning objects class 一学习对象类 ; 学习对象类
Class for Dark Objects 暗对象的类
Class and Objects 类和对象
Objects class 对象类
disputed class of objects 有争论的对象类
class loader objects 类加载器对象
Class method objects 类方法对象
Class for Bright Objects 亮对象的类
Now that folders are first class objects, you can use them instead.
现在文件夹是第一个类对象，作为替代，你可以使用它们。
Similarly, looking up class objects can be expensive, so they should be cached as well.
同样，查找类对象的开销也很大，因此也应该缓存它们。
Within those packages are class objects that are associated to the same parent package.
这些包中的类对象与相同的父包相关联。
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