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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.二未害人，为官更是政绩卓著。Hard disk is a kind of hardware, which is used to store files. Floppy disk is also a kind of storage device. It can only be used by floppy disk. Now it is only 1.44 MB, and its capacity is too small. It is generally not used now. Now it has been gradually replaced by U disk.招降了两万多人，实力壮大很多，正因如此，很可能受到项羽猜忌。可也只能想想而已，明知开口求去，也肯定是不允许的。此剧以最前方非武装地带为背景展开，描述了搜查队的秘密作战故事。