賴世雄英語新聞聽力通 第57期:汽車廢氣會引發(fā)心臟病

(WASHINGTON, Reuters)Research shows that two hours of exposure to elevated levels of caremissions raises the likelihood of a heart attack.

(路透社華盛頓電)研究顯示，接觸高濃度汽車排廢氣達兩個小時時，會提高心臟病發(fā)作的可能性。

The risk of a heart attack increases 48 percent in the two hours after exposure and there is an increased risk even 24 hours after exposure.

接觸廢氣兩個小時之后，心臟病發(fā)作的危險性增加了4800，甚至經過廿四個小時之后也仍有增加心臟病發(fā)作的危險。

People should avoid going outside for a long period of time when air duality is poor.

空氣質量差的時候，民眾應該避免長時間外出。