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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.Web-based mind mapping applications are cheaper than desktop applications. If you are a mind mapping enthusiast, you can try to compare the prices of the two tools. For those users who need to manage workflows, the cost of a few dollars per month is not much.Stephen was afraid of silence for the first time. The empty sanctuary could even hear his crazy heartbeat. He raised his hand and drew half a circle in the air. Then he sighed and put his hand down. "No, Stephen, you shouldn't do this... shouldn't..." He felt that he was like a lost dog now and was at a loss.The third adapter mode is the adapter mode of the interface, The adapter for the interface is as follows: Sometimes we write an interface with multiple abstract methods, When we write the implementation class for the interface, All methods of the interface must be implemented, This is obviously wasteful at times, Because not all methods are what we need, Sometimes only a few are needed, In order to solve this problem here, we have introduced the adapter mode of the interface. With the help of an abstract class, the abstract class implements the interface and all methods. However, we do not deal with the original interface, but only get in touch with the abstract class, so we write a class, inherit the abstract class and rewrite the methods we need. Take a look at the class diagram:然而没想到的是，剧中另外一位主演Aoey，虽然一开始他喜欢的是Nubsib，但在后来的接触中却渐渐爱上Gene，Gene一边要处理和Nubsib之间的情感关系，另一边还要面对由此而产生的流言蜚语，两人的未来将何去何从.....小葱又细细地询问了同袍中都有哪些人。这次小鱼儿怎么能逃得掉？小鱼儿该不会真得被花无缺杀了。