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Log needs to analyze three places:边防检查站在一次侦查办案中，发现了一农妇运送的核桃里藏有毒品。经过边防检查站官兵的努力，嫌犯沈冬雪对自己的犯罪行为供认不讳,并积极配合警方抓捕了毒贩。当大家了解了沈冬雪不幸的遭遇后，边防官兵自发进行捐款，柳佳佳通过媒体筹集了大量善款，沈冬雪的孩子得到了救治。楚旭涵是一名年轻的舞蹈家，有着美好的婚姻和家庭。当遭遇了爱人的背叛，为了麻痹自己，她将全部精力投入到舞蹈比赛的备战中，但常年的腰伤使她无法正常训练。就在她人生低落的时候误入迷途，以毒品麻痹自己。楚旭涵进了戒毒所，开始积极生活，配合警方抓捕毒贩，顺利戒毒后与爱人重归于好。楚旭涵成了全国的禁毒大使，在她的鼓励下，戒毒所的戒毒人员积极抵制毒魔，重获新生。她们的故事警示人们：珍爱生命，拒绝毒品。"No." The security guard replied to me, "It is true that some people just want to come and see the situation. And he also doesn't want you to be nervous. The money may still be available."Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:娃儿们都愣住了，一个个面面相觑，万没想到她上来就问这个。