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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.影坛鬼才王晶早期一部具国际视野的动作电影，全片除了充满越战式的游击战斗，还有传统的埋身肉抟，并在泰国实地取景。巨富之女贺盈聘请罗力于七天之内到柬埔寨，从杀手乃文手上夺回一盒录有商业秘密之录音带。罗力为了一百万酬劳，毅然与贺盈订定合约，并召集好友组织一支敢死队，潜入柬埔寨与游击队交涉。几经艰险，罗力终于完成任务，不料整个事件背后原来有极大阴谋……阿曼达·伯顿说：“我很高兴能回到沉默证人的位置，重新站在山姆·瑞安的立场上，这很不一样！观众们可以期待看到山姆离开莱尔后经历的许多曲折。”不如打起精神来，妹妹未必就不能嫁一个好人家。他们就去大荷花池子练习登萍渡水。张杨摇头，耐心地告诉她道：你想法是好的。Although it can weaken the connection between objects, if it is overused, it will make the code difficult to understand and maintain, etc.