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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.韩信这边只能如此了，且放他放手去打吧。众人却都笑起来了，嘴里说着吉祥话，拥过来替他们兄弟换衣裳收拾床铺。从孔雀城下林聪被袭开始，他们就是陌路人了。After the test, this post was linked to the 17th floor of the "Bow and Arrow Large Strategy Post". The link was swallowed and the landlord will resend it later.玉米就对苞谷许诺道，等他手好了，天天吃烤鱼。