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Link: Ubuntu 16.04 Installing Eclipse DetailsSimilar to the development of children from appearance and color to older children, they can be classified according to concepts. For example, if they know the concept of "food", no matter what kind of vegetables they look like, they should be classified into one category. The classification of biology has also developed in this way. The earliest method is to identify and distinguish species according to phenotypic characteristics, and to classify them step by step according to the degree of phenotypic similarity, so as to establish a classification system that is easy to retrieve. This is the principle of phenotypic classification. However, the problem of phenotypic classification is that it is difficult to reveal the essential laws of things. Many creatures with very different shapes may have kinship relationships. For example, the online sentence "When I knew sunflowers belonged to Compositae, I collapsed" is what it means.　　她决心找到外太空生命迹象的努力，只得到少数人的理解，但绝大多数人都认为她的行为是疯狂的。她和她的同事们为了寻找外太空生命而努力工作。There is no requirement for the minimum size of the veneer for the time being, but when either side of the veneer size is less than 80mm, it is required to adopt the form of splicing. For detailed requirements of splicing, please refer to the splicing specification.Extras and flags are too familiar to repeat.114. X.X.239