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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.　　该剧基于Matt Ruff2016年所著同名奇幻/恐怖小说，设定在1950年代吉姆·克劳法实施期间，讲述黑人男主Atticus Black和好友Letitia以及叔叔George踏上公路之旅，在全美寻找失踪的父亲，他们要克服白人至上主义带来的压迫，同时与邪恶势力斗争。Advanced Mathematics (Tongji 7th Edition): Yes, what I said is the reference book for postgraduate entrance examination. It is really good, with moderate difficulty, and with the corresponding video or video of some basic courses abroad, the high number understands the limit, derivative, differential and integral are almost the same.他躺在草地上睡得香呢。