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Finally, let's do some testing work:霸气女神宁若笙与男神苏凛的婚姻正经历着“七年之痒”，此时怀上二胎的宁若笙认为丈夫苏凛对自己的感情日渐冷淡，赌气的她产生了离婚的念头，两人的婚姻也迎来了前所未有的危机。在30天的离婚冷静期中，两人回忆起了大学时期相识相知相爱的点点滴滴，才恍然大悟，爱情的基石是相互理解，彼此包容，而这场轰轰烈烈的离婚闹剧最终败给了爱情........Yy乘警长战玉在与乘警组同事出乘前偶遇一名突然死亡的男子。男子在垂死前将一物偷放进乘警蔡荫身上。战玉等人与同事交接后继续登车出发，让他们没有想到的是，随之而来的一系列异常情况，危及着整个列车的安全。Qq: 3365413694, V-letter: xjs776 hong kong citizen no.: Xia kwan shanLiskov 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:车中人摇手制止，他才停下，装作不经意地领着弟妹避闪开来。