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Interpreter Pattern: Given a language, the interpreter pattern can define a representation of its grammar and provide an interpreter at the same time. Clients can use this interpreter to interpret sentences in this language. The interpreter pattern will describe how to interpret these statements using pattern design after having a simple grammar. The language mentioned in the interpreter mode refers to any combination that any interpreter object can interpret. In the interpreter mode, a hierarchical structure of command classes representing grammar needs to be defined, that is, a series of combination rules. Each command object has an interpretation method, which represents the interpretation of the command object. Any permutation and combination of objects in the hierarchy of command objects is a language.他相信启明的未来肯定比星海好。5 Mental and Nervous System这可是天大的喜事，冲淡了这些日子以来的愁云惨雾。他的心忽然充满轻柔的感觉，微笑解释道：严将军今晚这番举动，一是做给南雀使臣看的，二是为了激起将士们的愤敌之心。几颗杏树是近两年新近种植的，并不高大，不过已经是开满了繁华，好不漂亮。赵锋又道：板栗跟葫芦也不能分一块。