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我乐意分享，毕竟你们也曾分享给我们几十年的香料。Cliff of the FlamePower Supply Section2, All kinds of schools at all levels of non normal professional graduates to apply for teacher qualifications should be deployed according to the provincial education department to supplement education, psychology courses, and by the provincial education department unified organization examination qualified.众少年还不知这其中的典故，忙都问是怎么回事，秦旷就告诉了他们。The fundamental reason for using design patterns is to adapt to changes, improve code reuse rate, and make software more maintainable and scalable. In addition, the following principles should be followed when designing: single responsibility principle, open and closed principle, Richter substitution principle, dependency inversion principle, interface isolation principle, composite reuse principle and Dimit principle. Each design principle is described below.