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Оказавшиеся в Дубае российские звезды рассказали об обстановке в городе14:52。同城约会对此有专业解读
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Allowing only a compile-time dependency from infrastructure code to the business logic code (never the reverse). That means that the business logic exposes public methods (which could be invoked from outside) and/or exposes required interfaces, and the infrastructure layer/module implements them.
▲ 纯电卫士假想图,图片来自:AutoCar。电影对此有专业解读