Electronic waste contains a large number of human health and environmental harmful substances.

电子废料中含有年夜量对人体安康和情况有害地物质。

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The UK-based Royal Commission on Environmental Pollution says that while the materials have so far shown no sign of being harmful, there is a "major gap" in research about their potential risks.

这份报告由英国皇家环境污染委员会完成，它说，尽管纳米材料迄今为止没有表明有害的迹象，但是对其潜在风险的研究还有“严重的欠缺”。

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Boehlert and others say that even if wave energy has some local environmental impacts, it would likely be far less harmful than coal - and oil-fired power plants.

Boehlert和其他人认为，即使波浪能源对局部环境有影响，它应该比用煤、石油为燃料的电厂危害小很多。

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People who agreed that environmental smoke was harmful to children's health were more likely to have restrictions on smoking in their homes.

VOA: special.2009.01.07

This is an extremely costly, difficult and dangerous process that has potentially harmful environmental impacts.

FORBES: Environmental Scientists Urge That Decommissioned Oil Rigs Be Transformed Into Artificial Reefs

At the beginning of this century, China began taking steps to mitigate the harmful environmental impact of its rapid economic development.

FORBES: Quenching China's Thirst For Water

Enhanced investments would facilitate sustained coordination across research and regulatory agencies with the objective of reducing or eliminating harmful environmental exposures and modifying social and lifestyle factors implicated in breast cancer.

FORBES: New Government Breast Cancer Report Calls for Focus on Prevention, Study of Environmental Risk Factors