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We can understand that the responsibility chain mode is a chain composed of processing requests. Requests are passed between these objects in turn until we encounter an object that can process it. We call these objects nodes in the chain. For example, object a sends a request to object b. If object b does not process, it will give the request to c. If object c does not process, it will give the request to d, and so on, until one object can process the request. Of course, if no object processes the request, then the request will leave the chain.藏身的这个山洞毕将来很快暴露，事关数百人安危，不得不慎重。宋义笑的很狂野得意，话语中心理已经有些扭曲变态。当初尹旭口口声声是说向自己请教，可是现在看起来，倒像是自己来向尹旭学习的。Zhou Yumin已经超过了你的身价了。For all kinds of manufacturing practitioners and innovation subjects, "high-end" should be regarded as a clear value orientation. This is also in line with Li Qiang's consistent expectation: Shanghai either does not do it, "if you want to do it, you must do your best"-the high-end of the "chain" and the high-end of the "quality" of the industry are both due meanings.