英语翻译What is happening in our weather?Of course we have never been able to predict exactly what the weather wil1 be like,but now strange weather patterns are seriously affecting many parts of the world.Droughts in Mexico and Brazil have recently caused great crop losses in the United States they have even had to make their own snow for the Winter Olympics.Scientists have found that the cause of this strange weather is that air circulation pattern has c

英语翻译
What is happening in our weather?Of course we have never been able to predict exactly what the weather wil1 be like,but now strange weather patterns are seriously affecting many parts of the world.Droughts in Mexico and Brazil have recently caused great crop losses in the United States they have even had to make their own snow for the Winter Olympics.
Scientists have found that the cause of this strange weather is that air circulation pattern has changed and is now more variable than earlier in this century.This means that different regions of the world get long spells of the same type of weather,whether hot,co1d,wet or windy.
However,weather experts have different views about why this has happened.One theory is that the temperature of the sea has increased.Another is that man's activities on earth have disturbed the balance of nature.
Whatever the cause,the economies of many countries in the world depend upon the weather.And until we know exactly what effect man's activities are having on the weather,we can not make changes which might help.So for the moment,the only answer is --- wait and see!