Unit 3第三单元 The Veil of the Earth地球的面纱 Mother Earth always wears a thick veil地球妈妈总是披着厚厚的面纱 wrapping us under it.把我们裹在面纱之下。 The wind speaks to us when the veil flutters gently: "Do you know what the veil does?面纱轻轻飘动风儿就对我们说话:“你知道面纱有何作用? We can't live without it.人类生活可不能没有它。 I smiled and replied to the wind:我笑着对风儿回答: "I want to solve the mystery of the veil,“我要解开面纱之谜, I will answer your questions too.把你的问题也一起解答。 12 The Veil of the Earth12地球的面纱 Do you know the mystery of the Earth's atmosphere?你知道地球大气层的奥秘吗 The atmosphere is the outermost circle of the Earth, surrounding the oceans and land.大气层是地球最外部的圈层,包围着海洋和陆地。 The atmosphere has no exact external boundary and its material composition is dominated by nitrogen and oxygen.大气层没有确切的外部边界,物质成分以氮和氧为主。 The existence of the atmosphere is a veil of mystery for the Earth 大气层的存在,为地球罩上了一层神秘的面纱 The atmosphere is the umbrella of the Earth and an important guarantee of life activities on the planet 大气层是地球的保护伞,是地球上生命活动的重要保障 1 0 0 0 km escape layer 5 0 0 km Thermosphere 8 0 0 km Intermediate layer 5 0 km Stratosphere 1 0 km Troposphere What would happen to our planet if there was no atmosphere? Without the atmosphere the life on Earth would be ......假如没有了大气层,我们的地球会怎样? There is no atmosphere on the moon ......月球上没有大气层…… With the rapid development of human social production activities, various pollutants are entering the earth's atmosphere in large quantities, which is what people call "atmospheric pollution".随着人类社会生产活动的迅速发展,各种污染物大量地进入地球大气中,这就是人们所说的“大气污染” How do you feel when you see such a scenario?看到这样的情景你有何感想? Ozone hole臭氧空洞 Acid rain酸雨 Automobile exhaust汽车尾气 Industrial waste gas工业废气 Take action and organize an awareness campaign on the theme of "Protecting the Ozone Layer".行动起来,组织一次以“保护大气臭氧层”为主题的宣传活动。 Information Cards资料卡 Ozone layer crisis臭氧层危机 The depletion of the ozone layer causes a large amount of ultraviolet radiation from sunlight to the ground.臭氧层耗竭,会使太阳光中的紫外线大量辐射到地面。 The increase in UV radiation has negative consequences for humans and the environment in which they live.紫外线辐射增强,对人类及其生存的环境会造成不利的后果。 It has been estimated that if the ozone content of the ozone layer decreases by 10%, UV radiation in different areas of the ground will increase by 19% to 22%, resulting in a 15% to 25% increase in the incidence of skin cancer.有人估计,如果臭氧层中臭氧含量减少10%,地面不同地区的紫外线辐射将增加19%~22%,由此皮肤癌发病率将增加15%~25%。 It is also estimated by the U.S. Environmental Protection Agency that for every 1% reduction in ozone in the atmosphere, there will be 100,000 more skin cancer patients and more people suffering from cataracts and respiratory diseases.另据美国环境保护局估计,大气层中臭氧含量每减少1%,皮肤癌患者就会增加10万人,患白内障和呼吸道疾病的人也将增多。 The effects and hazards of increased ultraviolet radiation on other organisms are also disturbing.紫外线辐射增强,对其他生物产生的影响和危害也令人不安。 It is believed that the destruction of the ozone layer will disrupt the complex food chain in the ecosystem and lead to the extinction of some major species.有人认为,臭氧层被破坏,将打乱生态系统中复杂的食物链,导致一些主要生物物种灭绝。 The destruction of the ozone layer will reduce the production of two-thirds of the Earth's crops, leading to a food crisis.臭氧层的破坏,将使地球上三分之二的农作物减产,导致粮食危机。 Increased ultraviolet radiation will also lead to global warming.紫外线辐射增强,还将导致全球气候变暖。 |
Powered by Discuz! X3.4
Copyright © 2001-2020, Tencent Cloud.
