1. Roman physicians described the chills and fevers and recurring attacks of malaria, noting that it was most frequent in low, marshy areas.
    罗马时代的医生描述了疟疾患者的周期性寒热，指出它多发生在低洼沼泽地带。

2. If the term sounds unscientific to 20th-century ears, let us remember there is a definite connection between marshy lands and malaria, and that the naming of the disease itself perhaps represents a praiseworthy effort of observation.
    尽管对20世纪的人来说，“坏空气”一词听起来不科学，我们应该记得沼泽地和疟疾之间有着肯定的联系，因此，“坏空气”一词自身也许代表着一种值得称道的观察。