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2. The coupling between the publisher and the subscriber is reduced. The publisher only publishes a message, and it does not care how the message is used by the subscriber. At the same time, the subscriber only monitors the event name of the publisher. As long as the event name of the publisher remains unchanged, it does not care how the publisher changes. Similarly, the seller (publisher) only needs to tell the subscriber (buyer) about the arrival of shoes, regardless of whether the buyer buys or not, or whether he buys other sellers. As long as the shoes arrive, the subscriber can be notified.改编自畅销系列小说，自称平庸的初中生内藤内人和巨型企业集团，旨在与著名游戏创作者和神秘组织共同打造最强大的游戏。1. This kind of ball is relatively light and does not need too much force when used. It is easy for scholars to use.MyDoSth (sender, e);Be steadfast and steady:可是将军所言？戚继光惊讶地望着杨长帆，半天说不出话来。　　在经过全球筛选年轻小演员之后，Netflix在上年确定了即将开拍的超自然剧集的主演，被选中的小演员有Finn Wolfhard、Millie Brown、Gaten Matarazzo、Caleb McLaughlin、Noah Schnapp、Natalia Dyer和Charlie Heaton。