这该归入哪一级标题？
清单2是简单概念的迁移路径，包含多个二级标题。
Listing 2 is a sample migration path for a simple concept, with multiple secondary headings.
它示范了二级标题是如何创建节的，而级别更低的标题必须修改。
It demonstrates how a secondary heading creates a section, but lower-level headings must be fixed.
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