The grave issues involved in the current environmental dilemma include high population density, environmental pollution, an overabundant of silt in rivers and lakes, and the frequency of disasters.

但当前这一地区环境问题并不理想，人口密集、环境污染、河湖淤浅、灾害频发等矛盾比较突出。

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The urgent situation of activated sludge reduction technology was illustrated in this paper from the view of current sludge treatment and disposal on environmental and economical issues.

从当前污泥处理和处置在环境和经济方面存在的问题出发，阐明了研究污泥减量技术的紧迫性。

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Bill Ford, his great-grandson and the company's current executive chairman, also has a history of interest in environmental issues that has shaped the company's approach.

他的重孙、福特公司现任执行董事长比尔·福特(Bill Ford)也有关注环境问题的历史，这种关注影响着福特的运营战略。

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These arguments center largely around the idea that current air pollution regulation is good enough as-is, and that any further restrictions are aimed at tackling environmental issues and climate change, both typically seen as luxuries in a down economy.

FORBES: Two New Reasons to Worry about Air Pollution: Obesity and Diabetes