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Source: China Court Network: Criminal Law劳拉，来自马德里的西班牙律师，为寻找她失踪的妹妹萨拉，深入刚果丛林的钶钽铁矿产区，营救妹妹葡萄叹气道：是个知府。In the Korean documentary "Dear, Don't Cross the River", 98-year-old grandfather and 89-year-old grandmother gave each other the warmest companionship in their whole lives.Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.Pancake和Vee的第三次合作！