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Deliberate practice does not deny the importance of situation, but in some best sellers, the mainstream methods that have been confirmed by learning science are placed in a humble corner. Tacit knowledge, which is closely related to learning, is ignored. A large number of studies in learning science show that the best way for adults to learn is not to practice alone, but to learn in situations. Effective learning is to enter relevant situations and find one's own "learning community". At the beginning, learners turn around important members and do some peripheral work. With the growth of skills, they enter the core of the learning community circle, gradually do more important work and eventually become experts.刘井儿忙道：知道了。Let's start the tutorial:天启，就算你把《寻秦记》写成科幻小说，那又如何？该扑街还是扑街。　　狭路相逢，勇者胜……个鬼嘞！秒怂开溜的她却被一盆狗血泼了个神清气爽——老狐狸车祸失忆了？！哈哈哈哈哈哈哈宁也有今天！2. After receiving the packet, the server puts the data into a queue called. And send a return packet, in response, the return packet has its own serial number (Seq=Y) and an Ack, the value of which is the Seq value sent by the client plus one;可是现在一切晚了这一生惨叫……………，越国人一定留意到了。