translation.en: In fact, 65 decibels is the very level at which this big survey of all the evidence on noise and health found that, that is the threshold for the danger of myocardial infarction.
translation.zh: 事实上，这项关于噪音与健康的调查显示 65分贝正是 可能引致心肌梗塞 的分贝临界值。