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Similar 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.可是，她们顺着河流跑了好远，也没看见板栗的影子。What is the psychological representation//085202. X.X.167When it comes to socks, although they are not as popular as sneakers and jerseys, I have to say that a pair of comfortable socks can really make you have a better competitive state. Otherwise, there will not be so many professional players and amateurs who will favor all kinds of "magic socks" with anti-skid performance. As the highest stage in the football field, the World Cup has always been the best stage for all kinds of new football equipment to appear. In addition to introducing new technology-based uniforms for each World Cup team, Adidas has also introduced new players' socks with revolutionary designs for the players. This issue of "Appreciation of New Products" will take you to appreciate this brand-new home player socks prepared by Adidas for Japan's national team, which is known as the "Blue Samurai", to see what the mystery is.　　时杜结识二女鬼，紫云，紫花，对紫花尤其迷恋，二人展开旖旎烂漫的爱情，惜此事被花之主人三魔查悉，遂向花四家压力，花终于在无可选择的情况下，自我了断以结束此段哀怨的感情，此事更间接令钟与三摩展开连番恶斗。嘉靖面色微沉，周围气氛凝滞。