文檔不是說了嗎？要“讀”，別光“看”啊Most bundles are also packages. For example, applications and plug-ins are typically presented as a single file by the Finder. However, this is not true for all bundle types. In particular, a framework is a type of bundle that is treated as a single unit for the purposes of linking and runtime usage, but framework directories are transparent so that developers can view the header files and other resources they contain.bundle和package經常混合使用。但是bundle和package并不是等同的，有些bundle是package，你可以打開這個目錄，修改、添加文件，而有些bundle不應該被視為package，比如framework，因為它不應該可以修改。