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Answer: The similarity of these three modes is that they all serve as an intermediate layer between the client and the real used class or system, which plays the role of allowing the client to indirectly call the real class. The difference is that the application occasions and intentions are different.　　When Star returns to her home dimension, she discovers that magic is disappearing throughout the kingdom. Star must dig deep and challenge her arch nemesis Ludo in an effort to save her family and kingdom.However, crocodiles' short, rounded and sparsely arranged teeth do not have the function of cutting flesh. Their main function is to hook and inject the skin of prey during hunting to prevent prey from escaping. Land carnivores pay more attention to chewing, so they do not have such function.Ma Jinyu: In a muddle-headed way.(2) Activity Abnormal Life Cycle and Application1989.07-魔女宅急便