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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.Be cautious in the end and pursue the far.现在想想要是自己当初死在香溪河里，或者从此流落魏国，那将会是何等的悲惨，何等的遗憾？足可见上天待自己不薄。说完，对小灰伸手道：小灰，过来。Evidence that readers of Hacker News have compiled shows that many founders of Internet companies also acquire less than 10,000 hours of professional skills. In this book, the data used by Erickson is not the law of 10,000 hours either. Before the age of 18, students engaged in music education spent an average of 3,420 hours on violin training, while excellent violin students practiced an average of 5,301 hours and the most outstanding violin students practiced an average of 7,401 hours.于是出去了，走两步，又回头问头一个丫头，你叫做什么名字？自己房里的丫头连名字也不知道，总不好。3. MDT diagnosis and treatment decisions usually need to follow industry clinical guidelines;