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　　Season 3, Episode 7: The Six Napoleons《六个拿破仑半身像》20 August 1986吴老太见这小子走了，这才骂道：尸骨未寒，便来惦记了。Some plants are very picky when choosing pollinators. The flowers of European Trollius are like a real safe deposit box, and only six kinds of insects know the code to open the safe deposit box. These lucky people all come from the genus Brevicorn. Only they know how to get into the sepals of European Trollius and find the center of the flower. However, no matter how hard other insects try, they can only fail with disappointment. The short-horned flower fly, which has gone to great pains to pollinate European Trollius, will naturally receive considerable "remuneration". Female short-horned flower flies lay eggs on the carpels of flowers. When the larvae are hatched, they will eat the seeds of flowers and grow up. This symbiotic relationship also has certain risks for European Trollius. The more short-horned flower flies, the greater the chance of pollination, but at the same time, the more insects parasitic on flowers. The cooperative relationship between the two was formed millions of years ago and continues to this day. It is a model of relative balance and harmonious symbiosis in nature.2008年1月26日到2月5日，突如其来的寒潮使花城广州呈现一片北国风貌。数十万旅客滞留在广州火车站，故乡在召唤每一个游子的心。Responsibility chain mode: pay attention to encapsulating object responsibilities, support changes in responsibilities, and realize transaction processing by dynamically constructing responsibility chains.Obvious Advantages of Online Institutions: