①.空气污染对气候的影响：the impact of air pollution on climate air pollution is now discussing how they affect climate. the most serious air pollution is generated by burning: the。
②.In the past few decades, our Earth has changed a lot, but to the bad direction. Among these changes, the air pollutions resulting from a huge number of automobiles and coal-burning is almost the severest. The severe air polluti..。
③.空气污染 Air Pollution In the past few decades, our Earth has changed a lot, but to the bad direction. Among these changes, the air pollutions resulting from a huge number of 。
④.大约100-300左右，可以演讲的！
⑤.Air pollution Air pollution comes from factories, power stations and cars. Chemicals in the smoke from power stations cause a lot of damage. They can travel hundreds of miles in the wind before falling to the ground in the rain..。
空气污染对气候的影响：the impact of air pollution on climate air pollution is now discussing how they affect climate. the most serious air pollution is generated by burning: the。
in the recent years,the air pollution is become more and more seriously.the pollution comes from some ways as follow:1the personal car produced more carbon-dioxide,it is 。
大气污染是现在世界上最严峻的问题之一。人们因为使用机器而污染了空气。机器排放废气和烟雾，严重的大气污染可能会引发疾病甚至死亡。我们希望禁止污染，但这是。
大气污染是现在世界上最严峻的问题之一。人们因为使用机器而污染了空气。机器排放废气和烟雾，严重的大气污染可能会引发疾病甚至死亡。我们希望禁止污染。
How to save environment?I think we should do the followings:First,it’s best to ride a bike to school,don’t take a bus or a taxi.Second,I will remember to turn off the lights when I leave the classroom.Third,in my free time,I wi..。
①.. Air pollution Air pollution comes from factories, power stations and cars. Chemicals in the smoke from power stations cause a lot of damage. They can travel hundreds of miles in the wind before falling to the ground in the ra..。
②.once man did not have to think about the protection of his environment. there were few people on the earth, and natural resources seemed to be unlimited. today things are 。
③.air pollution air pollution comes from factories, power stations and cars. chemicals in 。 many of the injured lost their sight. 空气污染 空气污染来自工厂、电站和汽车。电站发。
④.Air pollution is one of the major problems of the modern world. A great deal of energy is needed to run the factories of modern industrial nations. Automobile, trains, planes and busses need energy, too. Nearly all of this ener..。
⑤.Pollution is becoming more and more serious all over the world. As is shown in the cartoon, two cars are giving off waste gas and three people are trying to avoid breathing in 。
空气污染 Air Pollution In the past few decades, our Earth has changed a lot, but to the bad direction. Among these changes, the air pollutions resulting from a huge number of 。
Air Pollution In the past few decades, our Earth has changed a lot, but to the bad 。 翻译 空气污染 在过去的几十年中，我们的地球发生了很大变化，但是是往坏的方向。在这。
Pollution is becoming more and more serious all over the world. As is shown in the cartoon, two cars are giving off waste gas and three people are trying to avoid breathing in the poisonous gas by masking their face with their ..。
How to save environment?I think we should do the followings:First,it's best to ride a 。 还必须加强白色污染处理，少使用塑料制品。最后，必须改善清洁方面。使城市的外。
Pollution is becoming more and more serious all over the world. As is shown in the cartoon, two cars are giving off waste gas and three people are trying to avoid breathing in 。
In my opinion,to protect environment,the government must take even more concrete measures.First,it should let people fully realize the importance of environmental protection through education.Second,much more efforts should be ..。
In the past few decades, our Earth has changed a lot, but to the bad direction. Among these changes, the air pollutions resulting from a huge number of automobiles and coal-burning is almost the severest. The severe air polluti..。
空气污染 Air Pollution In the past few decades, our Earth has changed a lot, but to the bad direction. Among these changes, the air pollutions resulting from a huge number of automobiles and coal-burning is almost the severest...。
Air Pollution In the past few decades, our Earth has changed a lot, but to the bad 。 翻译 空气污染 在过去的几十年中，我们的地球发生了很大变化，但是是往坏的方向。在这。
air pollution air pollution comes from factories, power stations and cars. chemicals in 。 many of the injured lost their sight. 空气污染 空气污染来自工厂、电站和汽车。电站发。
