给水排水专业英语课件(李田)2.pptVIP

Unit 2 The World Fresh Water Resource New words and expressions environmental adj. 环境的，周围的 integral adj. 整体的，构成整体所需要的 n. 积分 ecological adj. 生态的，社会生态学的 harbor vt 隐匿，庇护 n. 港湾 New words and expressions aquatic adj. 水的，水生的，水栖息的 ecosystem n. 生态系统 species n. 种类，物种； 样式 aqueduct n. 沟渠，导水管 desalinate = desalinize v. 除盐，海水淡化 arid adj. 干旱的，贫瘠的 iceberg n. 冰山 reverse adj. 相反的，颠倒的 n. vt. 相反，颠倒 New words and expressions aquifer n. 含水层，蓄水层 rudimentary adj.根本的, 未发展的 malaria n. 疟疾, 瘴气 typhoid n. adj.伤寒症，伤寒的 cholera n.霍乱 wetland n. 湿地，沼泽地 habitat n. (动植物的)生活环境, 产地、栖息地, elucidate [i‘lu:sideit] vt.阐明, 说明 Please elucidate the reasons for your action dwelling n.住处，房屋，公寓，住宅 sanitation n. 卫生, 卫生设施 momentum n. 动力, 要素；动量；总冲量 renewable adj.可更新的, 可恢复的 recharge v. n.再充电, 再补充 rechargeable runoff n. 溢流:The overflow of fluid from a container. 径流: Rainfall not absorbed by soil. apportion v.分摊，分配：to apportion the money fairly gauge n. 标准尺, 规格, 量规, 量表 rain gauge n. 雨量计 Amazon River 亚马逊河 Hawaii [ha:‘waii:] n. 夏威夷，夏威夷岛 monsoon n.季候风, (印度等地的)雨季, 季风 Oceania n.大洋洲 assess vt.估定, 评定 static adj.静态的, 静力的 static electricity dynamic adj.动力的, 动力学的, 动态的 In order to mobilize water for human needs, we build huge reservoirs to store water for dry periods and hold back flood waters, we build aqueducts to transport water thousands of kilometers from water-rich to water-poor regions; we burn oil to generate electricity of desalinate salt water in arid regions; and we dream of towing iceberg from the polar regions and of reversing the flow of massive rivers. Harsh realities intrude on these dreams. As we approach the 21st century we must now acknowledge that many of our effort of harness water have been inadequate or misdirected. We remain ignorant of the functioning of basic hydrologic process. Rivers, lakes, and ground water aquifers are increasingly contaminate with biological