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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.他们凭着记性，一百多人，有几十个人是认识的，另外几十人怎么也有个大概印象了，因此不怕人浑水摸鱼。日本东映动画将与沙特动画工作室Manga Productions打造合拍动画片[旅程](The Journey，暂译)。影片成本估计在1000万美元到1500万美元之间。这部基于古代阿拉伯历史和文化的动画电影将由静野孔文([哥斯拉：决战之都])执导。这部合拍片源于2017年11月两家公司达成的一项协议，一个月后沙特阿拉伯解除了对电影院长达35年的禁令。去了你家，你娘只有比我心细的，只怕准备更周全。在成门口匆匆上了马车之后。在林淼的配合下，焦阳一步步识破了宏宇集团内部争权夺利的阴谋。林淼和焦阳历经了迷茫、曲折和挣扎之后，勇敢改写了宏宇的命运，收获了成长和对彼此的爱。先绑在这，听说要等大将军示下，才敢处置呢。