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222. X.X.6大型航天题材电视剧一位逃离婚姻，一位是部落首领继承人，如此身份不同的二人相遇了。他们之间会发生怎样的故事呢？钢蛋进城后拿到捐助款就赶往回村的车站，在路上被车上的三名笨贼抢走了捐助款，于是开始追查笨贼的下落，几番周折找到笨贼的窝点。故事发生在南方某座城市。吴天河和秦永昌是建筑公司的卡车司机，秦永昌不幸坠崖身亡，留下5岁遗孤秦阳，被吴天河领养。公司老板送来5千块抚养费，被队长余全偷走。吴天河没有带回钱，因担心老婆张玉枝养活不了4个孩子，将小女儿吴雪带走。秦阳改名为吴阳。通过餐馆老板杨海妹，吴天河将吴雪送给余莉，改名宋雪。杨海妹是个外表漂亮，但饱经情感摧残的女人，她看上了吴天河的实在和能干，想以身相托。吴天河难忘发妻，离开杨海妹去当海员。他的家乡突遭水灾，张玉枝拉扯3个孩子流落到城里，在好心人的帮助下，以看自行车和收废品来维持生计。The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From BaiduGod 1 is fine