因此，小说题材研究同时被赋予了文体与修辞的双重使命。
Therefore, the novel theme research has dual mission: "Literary style" and "Rhetoric".
它兼有法律和道德的双重特征，还肩负着在两者之间做出基本区分的使命。
It has dual characteristics of law and morality, and undertakes the mission to distinguish between law and morality too.
服务是图书馆的主要使命，图书馆服务具有无形性、同时性和双重性。
Service is the main mission of the library with the intangible, simultaneous and dual nature.
服务是图书馆的主要使命，图书馆服务具有无形性、同时性和双重性。
Service is the main mission of the library with the intangible, simultaneous and dual nature.
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