Water pollution control, which is the study topic of this paper, is one important part in sustainable river basin management.

本论文的研究主题，水污染控制，是实现高效的流域一体化管理的一项重要内容。

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Risk theory is a hot study topic in the realm of modern actuarial science and mathematics, and ruin theory is the core of risk theory.

风险理论是现代精算和数学界研究的热点，破产理论是风险理论的核心内容。

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It has become an important question for study topic how to control the growth trend of traffic accidents and reduce the damage to the society.

如何遏止道路交通事故的增长趋势，减少其对社会所造成的危害，已经成为我们的重要研究课题。

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The Philadelphia Society, which is celebrating its 50th anniversary this year, will devote its annual meeting in early April to study this topic.

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After sitting in on the Introduction to Computer Science class taught by Evan Korth, an associate NYU professor, Mr. Patel saw his peers building products and was motivated to study the topic.

WSJ: Students Shift to Computer Science

In my opinion, the single best study on this topic was conducted by Prof.

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