环境与可持续发展(双语).pdf

2013-10-21 Chapter 5 Key Contents 1 Water Resources Water Resources, Water Pollution and Sustainability 2 Water pollution 水资源、水污染与可持续发展 3 Sustainable Management New words and Phrases New words and Phrases Groundwater(地下水) water table(水位) surface runoff (地表径流) Aquifer(含水层) reliable runoff (有效径流) Stream(溪流) Watershed(分水岭) Permeability(渗透性) drainage basin(流域) point sources(点源污染) natural recharge(天然补给) non-point sources(面源污染) recharge area(补给区) Biological oxygen demand (BOD)(生化需氧量) 1 2013-10-21 New words and Phrases 1 Water Resources eutrophication (富营养化) drought (干旱) 1.1 The physical properties of water Desalination(海水淡化) floodplain (漫滩) 1.2 Availability实用性of fresh water 1.3 Use and status现状of Water Resources 1.1 The physical properties of water Water covers about 71% of the earths surface, and organisms are made up mostly Hydrogen bonding(氢键结合) of water. Water molecules are held together by hydrogen bonds, which give Liquid over wide temperature range