nested scope meaning in English

嵌套作用域

So they don t conflict with other names in enclosing or nested scopes
，使它们不会与包含或嵌入宏的范围中的其他名称冲突。
At any time during execution , there are at least three nested scopes whose namespaces are directly accessible : the innermost scope , which is searched first , contains the local names ; the namespaces of any enclosing functions , which are searched starting with the nearest enclosing scope ; the middle scope , searched next , contains the current module ' s global names ; and the outermost scope ( searched last ) is the namespace containing built - in names
每次执行时，至少有三个命名空间可以直接访问的作用域嵌套在一起：包含局部命名的使用域在最里面，首先被搜索；其次搜索的是中层的作用域，这里包含了同级的函数；最后搜索最外面的作用域，它包含内置命名。