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The Source class is a decorated class, and the Decorator class is a decorated class. You can dynamically add some functions to the Source class. The code is as follows:What qualifications and requirements does a male kindergarten teacher need?　　陈美如五雷轰顶，被迫拾回不堪的少女记忆——英俊非凡、独爱自己的混血王子，倾国倾城、呼风唤雨的情敌公主，王子的挚友、富可敌国的顶级富豪，都是她12岁时在日记中编造出的人物。Step 2: Install the attack program on the intruding host, some of which act as the master control end of the attack and some of which act as the proxy end of the attack.Let's understand such a problem first, If our front-end development needs are the needs given to us by the demand side, It is possible that a front-end developer will deal with multiple demanders, Therefore, it will keep in touch with multiple demand parties. Then in the program it means keeping references to multiple objects, The larger the program, There will be more and more objects, The relationship between them will become more and more complicated. Now if there is an intermediary (if it is our supervisor) to meet the needs of multiple demanders, Then the demander only needs to give all the requirements to our supervisor, who will assign tasks to us according to our workload in turn. In this way, our front-end development does not need to contact with multiple business parties, we only need to contact our supervisor (i.e. Intermediary), which weakens the coupling between objects.The CPS3 substrate is perfectly simulated, which is explained in detail below.秦淼边忙边道：你懂的那些，我也不懂啊。