By this point, fermaw understood that his player instance was being ambushed whenever it called .play(). He tried to isolate the player from the main window context entirely.
self.seen_urls.add(url)
。关于这个话题，safew官方版本下载提供了深入分析
Жители Санкт-Петербурга устроили «крысогон»17:52
在学习的过程中，语法知识的学习是基础，虽然在语法上 AI 比我厉害。但在学习的过程中，我需要通过语法的学习去明白一个应用是如何构建与设计的。