Compare again the two more recent screenshots against the ones that came before, and focus on the toolbar at the top of each. In the older two, there is a well-defined separation between the toolbar — the window itself — and the document. In the Big Sur visual language, however, the toolbar is the same bright white as the document. By Tahoe and the Liquid Glass language, there is barely a distinction; the buttons simply float over the document. And, bizarrely, that degrades further with the “Reduce Transparency” accessibility preference enabled:
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。业内人士推荐新收录的资料作为进阶阅读
这种欲盖弥彰的撤回操作，恰恰打消了外界对“占位符误用”的怀疑，让看客们对新版本提前泄露的猜测可信度更高了。
注意，现在的任务是「写文章」，所以写出来的东西要有正式文章的质感，不能再是草稿或素材堆砌了。我很喜欢原书的引用和收集到的论点，请尽量保留精华，实在啰嗦的地方可以适当合并。