科学家们星期四宣布，与使用可卡因相比，空气污染更有可能诱发心脏病，其危险性相当于饮酒、喝咖啡和身体过劳。
Air pollution triggers more heart attacks than using cocaine and poses as high a risk of sparking a heart attack as alcohol, coffee and physical exertion, scientists said on Thursday.
诸如突然的精神高度紧张或身体过劳等这样的外部压力可能使心脏病发作机率提高40%。
These external pressures - such as sudden severe stress or physical exertion - can be a factor in up to 40 per cent of heart attacks.
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