第二輪翻譯

In the united states and most other affluent countries, the air is deaner drinking water is purer,and most rivers and lakes are cleaner than they were in the 1970s. In addition, the
food supply is more abundant and safer and the incidence of life-threatenting infections dieseases has been greatly reduced
美國和其他富裕的國家比較起來，他們的空氣，飲用水，湖水和河流都比他們在1970年時還要乾淨。除此之外，食物供應更加的充足，生活威脅上的傳染疾病也大大的減少了。