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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.郑武感觉自己的眼睛珠子都快要掉下来了，这哪里是人，分明就是神。约翰（艾伦·阿金 Alan Arkin 饰）是一名聋哑人，在小镇上的一间礼品店里工作，听觉和语言的缺失让他拥有更加敏锐的洞察力，也更加容易看透人和事的本质。约翰住在租来的房间里，这个房间原来的主人是一个名叫米克（桑德拉·洛克 Sondra Locke 饰）的女孩。小葱等人都笑了起来。The Validator class, here as the Context, is responsible for receiving the user's request and delegating it to the strategys object. In the above code, we first create a Validator object, and then add some validation rules to the Validator object through the validator.add method. The validator.add method receives 3 parameters, as follows:在该剧的最后一季中，自由高中的高年级学生正在为毕业做准备。但在告别之前，他们不得不埋葬一个危险的秘密，并面对可能永远改变他们生活的心碎抉择。