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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.第一季中比尔· 马斯特斯医生（迈克尔·辛饰）成功地将人类新爱拓展为自己的研究领域，但他也苦苦挣扎，努力在对工作的职业精神和个人奉献之间寻求平衡与区别，他与研究助理弗吉妮亚·约翰逊（丽兹·卡潘饰）萌生出感情纠葛。随着第二季的到来，局面变得更加复杂，随着两人关系的继续发展，比尔本就紧张的婚姻到达危急顶点，他的事业和个人职业生涯都面临危险，感情与工作的冲突成为比尔新季中遇到的最大矛盾。In subsequent interviews, I found the only squad leader at position 142 at that time: Zhao Mingkai, the squad leader is not an officer in the army, Not cadres, But as the backbone of the team, Having the title of "Mother of the Army" is the soul of a class and plays a far more important role in the battle than an ordinary soldier. Therefore, from his perspective, compared with other ordinary soldiers, he has a relatively large depth and breadth. In the interview, I did find many different things from sorting out his memories."Charming New Zealand" Episode I Colorful Country你的生命只有不多的时间,如果有机会重返15岁,你会怎么抓住这最后的机会呢,五位55岁的人,他们分别是唱歌走音的歌手,单身老同志,优秀配音员,失败拳手,严格的女教师,有一天他们几个突然都变成了15岁的孩子