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。
In the months before, space agency officials were in frequent contact with the State Department, which disseminated the latest predicted trajectories to embassies across the world. In these situations, oops doesn’t cut it: When one of the Salyuts, a Soviet space station model, was deorbited a few decades ago, flaming bits were littered across Argentina, scaring people and requiring the deployment of at least a few firefighters, according to local newspaper reports.
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小规模纳税人符合增值税法第九条第二款规定的，可以向主管税务机关办理一般纳税人登记，并自办理登记的当期起按照一般计税方法计算缴纳增值税。，这一点在Line官方版本下载中也有详细论述
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