The introduction typically begins with a general statement of the problem area, with a focus on a specific research problem, to be followed by the rational or justification for the proposed study.
引言一般以对该领域的简单描述开始，同时关注某一特定的研究问题，接下来是拟定研究的基本原理。
The investigators found that when the study participants looked at faces matching their own race, a specific area of the brain "lit up" on the MRI.
据发表于《自然神经科学》上的报告所载，研究者们发现当受试者看到自己种族的人脸时，MRI显示其大脑中的一个特殊区域“亮”了起来。
The specific topics of this thesis are as follows: Firstly, forest fire risk assessment system in the study area is established.
论文的具体研究内容如下：一是建立了研究区域内的森林火灾评价指标体系。
The investigators found that when the study participants looked at faces matching their own race, a specific area of the brain it up on the MRI.
据发表于《自然神经科学》上的报告所载，研究者们发现当受试者看到自己种族的人脸时，MRI显示其大脑中的一个特殊区域“亮”了起来。
And we study the effects of heat-treated process on the aerogels' density, specific area, microstructure, hydrophobic property and so on.
研究了热处理对气凝胶密度、比表面、微观结构和疏水性等的影响。
The specific surface area, pore size and yield ratio have been measured. Iodine and Methylene blue adsorption were used to study the adsorption capacity of ACHF.
测量了比表面积和得率，孔径分布，用碘吸附值、亚甲基兰吸附值测定了中空活性炭纤维的吸附性能，用SEM观察了其表面结构。
Secondly, since my dream is to be an expert of marketing in China, your program will be a good chance for me to study China from outside Angle, and to learn specific problems in Asia Pacific area.
其次，我的梦想是成为一名中国市场专家，你们的项目能给我一个很好的机会从外部世界的解读来观察中国，并且能对亚太地区的问题有一个很好的认识。
Secondly, since my dream is to be an expert of marketing in China, your program will be a good chance for me to study China from outside Angle, and to learn specific problems in Asia Pacific area.
其次，我的梦想是成为一名中国市场专家，你们的项目能给我一个很好的机会从外部世界的解读来观察中国，并且能对亚太地区的问题有一个很好的认识。
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