城市，如亚里士多德所认为，将永远会,和其它城市或国家同时存在，根于不同的管理原则,可能还会对自己人怀有敌意。
The city, as Aristotle understands, will always exist in a world with other cities or other states, based on different principles that might be hostile to one's own.
他虽然注意到,商业与财产的重要性,但城市存在的主要目的,如他说到,并非财富,并非创造财富。
Yet despite his awareness of the importance of commerce and the importance of property the aim of the city he tells us is not wealth is not the production of wealth.
不幸地是，人们对这道美食存在争论，在美国一些城市已经禁止销售和食用鹅肝了(如芝加哥)。
Unfortunately this delicacy is surrounded by controversy and the sale and consumption is banned in some American cities (such as Chicago).
这九律均为组织原则，在如生物进化，模拟城市这样变化莫测的运作系统中都存在着这样的原则。
These nine laws are the organizing principles that can be found operating in systems as diverse as biological evolution and SimCity.
存在于城市生活垃圾中的含氯塑料（如PVC等）是造成垃圾焚烧电站设备腐蚀和二次污染的主要因素。
Chlorine containing plastics (polyvinyl chloride) in municipal waste are a major source of corrosion and secondary pollution in municipal solid waste incinerators.
存在于城市生活垃圾中的含氯塑料（如PVC等）是造成垃圾焚烧电站设备腐蚀和二次污染的主要因素。
Chlorine containing plastics (polyvinyl chloride) in municipal waste are a major source of corrosion and secondary pollution in municipal solid waste incinerators.
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