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To provide a consistent interface for a set of interfaces in the subsystem, Facade mode defines a high-level interface, which makes the subsystem easier to use.凤海下了楼，不忘跟掌柜的交待，让他帮忙盯着点天字第一号门前的那个风铃，别给取了，掌柜问缘由，凤海也学会了卖关子，只道天机不可泄露。39. . . An error of 1 point is normal.Let's understand such a problem first, If our front-end development needs are the needs given to us by the demand side, It is possible that a front-end developer will deal with multiple demanders, Therefore, it will keep in touch with multiple demand parties. Then in the program it means keeping references to multiple objects, The larger the program, There will be more and more objects, The relationship between them will become more and more complicated. Now if there is an intermediary (if it is our supervisor) to meet the needs of multiple demanders, Then the demander only needs to give all the requirements to our supervisor, who will assign tasks to us according to our workload in turn. In this way, our front-end development does not need to contact with multiple business parties, we only need to contact our supervisor (i.e. Intermediary), which weakens the coupling between objects.乔相宜与因为一夜情而成为夫妻的总裁晏词在离婚的过程中相互较劲，渐渐理解并相爱上了对方。已经写好了一章了本姑娘今天要更新八章。