疫疠之气、湿热之邪为致病之因;
疫病是由感受疫疠之气引起的一种具有强烈传染性的疾病。
Pestilence is a fierce and infective disease which is caused by the pestilential pathogen.
疫病是由感受疫疠之气引起的一种具有强烈传染性的疾病。
Pestilence is a fierce and infective disease which is caused by the pestilential pathogen.
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