正如您所见到的，该文件是深度优先遍历，但不一定在任何目录内按字母顺序来进行。

As you can see, the file traversal is depth first but not necessarily in any alphabetical order within a directory.

youdao

反之，如果您禁用了深度缓冲，那么必须在绘制3d对象的顺序上付出一定精力。

Conversely, if you disable the depth buffer, you have to pay attention to the order in which you draw your 3d objects.

youdao

这两个函数均按照深度优先的顺序遍历树，但两者的差异在于先访问一个节点还是先访问其子节点。

Both functions walk the tree in depth-first order but they differ in whether a node is visited before or after its children.

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