self.base_url = base_url
首先是 .DS_Store 文件，其英文全称为 Desktop Services Store（桌面服务存储），诞生于 1999 年 Mac OS X Finder 重写时期。这是一种由 macOS 自动创建的隐藏文件，本质上是一个采用 B-树（B-tree）结构的专有二进制文件。它主要用于存储 Finder 文件夹的自定义属性与元数据，这些数据通常无法直接由文件系统本身记录，例如用于记录图标位置的 Iloc、用于存储 Finder 注释（Finder Comments）的 cmmt、以及文件夹背景图片 BKGD 等。
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圖像來源，Enid Din/@enid.din
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，更多细节参见heLLoword翻译官方下载
Backpressure – the ability for a slow consumer to signal a fast producer to slow down – is a first-class concept in Web streams. In theory. In practice, the model has some serious flaws.
She says cheaper costs abroad to put on a festival could also be a factor, but feels the festival is moving because "he's on the form of his life" after his Grammy win and the release of his fourth studio album, Idols, last year.。heLLoword翻译官方下载对此有专业解读