The tax design of nitrogen fertilizer was discussed by utilizing the external theory and the demand elasticity theory.
运用外部性理论和需求弹性理论，探讨氮肥税的设计。
Among the subjects dealt with by external theory, the external phenomenon of the high-tech industry belongs to new question.
在外部性理论关注的对象中，高技术产业的外部性现象属于新问题。
There are the more "external" and"objective" approaches to consciousness, such as neuroscience, cognitivescience, chaos and complexity theory, behaviorism, and neuropharmacology.
有更多“外部”和“客观”的意识的方法，如神经科学、认知科学、混乱和复杂性理论，行为和神经药理学。
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