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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.老人家叹了口气。If the response message can be received normally on 146, then return to 156 to check the rules of INPUT chain. The counter of the first rule has already shown the number of matched messages.一帮护卫见王爷都下去了，哪敢落后，纷纷脱了外衣、卷起裤腿下水，被冷水一浸，冰得龇牙咧嘴Germany: 1,770,000　　徐立功表示，现在关于婆媳的电视剧很多，他们之间的矛盾冲突都非常大，所以大家都爱看，的确这样的片子很好看，但是没有新意的角度剖析婆媳之间为什么会如此永无止境的“斗”。