This essay also discussed the ecological environment and existing problems of the Yangtze, the largest river in China.

文章同时讨论了中国第一大河长江的生态环境现状和面临的问题。

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Based on a lot of forest resource survey data, the utilizing characteristics and existing problems of forest resource in Heilongjiang areas are studied.

基于大量森林资源调查数据，对黑龙江省森林资源利用特点及其存在的问题进行了全面系统的分析。

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This paper discusses the theoretical basis of making urban rail transit fare and the common pricing model, and analyses the characteristics and existing problems of the models.

本文讨论了城市轨道交通票价制定的理论基础和常用的定价模型，分析了各模型的特点及其存在的问题。

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The Obama administration says it will also reduce federal budget deficits and stop insurance companies from denying coverage to people with existing medical problems.

VOA: standard.2010.03.23

Estimated at more than $1 trillion over 10 years, the measure would require most employers to offer health insurance to employees, and prohibit insurance companies from denying coverage based on existing medical problems or impose limits on coverage.

VOA: standard.2009.11.08

And existing problems have not gone away: most obviously, hard decisions still have to be made about whether to give more help to Greece, which barely featured in the summit's discussions.

ECONOMIST: The euro crisis

When it comes to household toxins, the landscape is always changing as new threats emerge and solutions to existing problems are discovered.

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He also had pre-existing hypertension and liver problems and had a family history of sudden death from exercise (his half-brother died at age 20 of an aneurysm while playing baseball).

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