Added the explanation about pg_stat_progress_vacuum view in Section 6.1.
照片被视为装置与摄影者意图的双重编码结果，既是信息，也是装置完善自身的反馈机制。，推荐阅读新收录的资料获取更多信息
SAVE $180: As of March 6, the Dyson V8 cordless vacuum is on sale for $359 at Amazon. That's a 34% discount on the list price.，推荐阅读新收录的资料获取更多信息
“当好中国式现代化建设的坚定行动派、实干家”