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Oppo mobile phones focus on the young people's market. TFBOYS is a little fresh meat among the little fresh meat. It cannot be said without signing. Oppo launched the R9 TFBOYS custom mobile phone, "I am your TFphone", and many younger sisters rushed to buy it.Rmvirtualenv ENV: Deletes the runenvironment ENV这几年里，我一直在思索武侠小说到底该怎么写。Public class WrapperTest {In collecting the stories of the investors, I saw the following stories with the investors, hoping to give the investors the confidence to actively safeguard their rights and get back the principal.彦博只好用自己的学习的专业知识证明自己的清白。后来彦博、泽琛、小柔三人都成为了各自领域的精英，一起携手合作揭破了一宗又一宗迷离案件，但谜团还是不断出现，甚至威胁到了他们的生命危险……Let me explain the role of these classes: MySubject class is our main object, Observer1 and Observer2 are objects that depend on MySubject, and Observer1 and Observer2 must change when MySubject changes. The AbstractSubject class defines a list of objects to be monitored, which can be modified: add or delete monitored objects, and when MySubject changes, it is responsible for notifying the objects that exist in the list. Let's look at the implementation code: