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The second classification principle of organisms is the lineage classification principle aiming at establishing evolutionary lineage. The classification method following this principle is called lineage classification. The representative of pedigree classification is "branch systematics". It advocates that the branches in evolution should be taken as the criteria for identifying and distinguishing classification units and the basis for determining the pedigree relationship of each classification unit. The so-called co-ancestral proximity (similar to a group of people being a grandfather) is used to measure the genetic relationship between different taxa and determine their position in the pedigree. The classification system finally established is an evolutionary pedigree reflecting the history of phylogeny, which is a deeper description of biological relationship. In other words, the basic principle of pedigree classification is that the classification system conforms to the evolutionary pedigree. Pedigree classification is only applicable to organisms and cannot be used for abiotic classification.亿万富翁江建国的女儿江离在结婚的这一天早晨，逃婚了。满心以为是心爱的人来带她私奔，却不料拥抱迎来的确实锋利的刀刃。被谋杀的江离被天使唤醒，却找不到生前记忆无法转世投胎。为了寻回记忆找到凶手，天使空空给了江离七天的时间。这七天内，江离站在一旁，重新审视了一遍自己的人生……动作巨制《危城》是由陈木胜、洪金宝首度携手打造新类型时代。时值国家内战、军阀割据的乱世时代，军阀少帅曹少璘（古天乐饰）因杀害三条人命，被普城保卫团团长杨克难（刘青云饰) 绳之于法。可曹家财雄势大，以强权震慑居民，曹家上校张亦(吴京饰)得悉事件后，赶来普城取人，在城中遇上多年不见师弟马锋（彭于晏饰），马锋是位武功高强的浪人，路见不平欲拔刀相助，可是却面临正义与兄弟情之抉择。不过尚氏王朝榨干了也就那么点油水，与其说兜售武器，不如说是施舍。项羽急切地想要报复，可是现在的局势根本不容许他随便地收拾掉哪一方。CAD shortcut key refers to the use of shortcut key instead of mouse in CAD software operation for the convenience of users. You can use keyboard shortcuts to issue commands to complete operations such as drawing, modifying and saving. These command keys are CAD shortcuts.小葱就一边照管家务，一边跟秦淼研习医书，顺便照看几个小的。