The first chapter gives the origin of the problem and notation and some definitions.

第一章我们主要介绍问题的提出和一些基本概念及记号。

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Chapter 2 makes an analysis of the origin of the problem, and the measures to deal with it.

第二章对集装箱营运中空箱调运产生的原因及现有解决问题的各种措施进行了分析和研究；

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The paper mainly introduces current status of organic contamination in groundwater, and combines the tenet, mainstream and proposition of environmental ethics to discuss the origin of the problem.

对太湖流域某地区浅层地下水有机污染特征进行了总结，并就污染来源、污染途径和典型污染源附近浅层地下水有机污染特征等问题进行了研究。

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But Mr Wallgrave believes the real solution to the problem lies in tackling it in people's country of origin.

BBC: Port uses hi-tech asylum controls