1. Who could have imagined, in the mid 1970s, for example, that by the end of the 20th century, computers would be as common in people´s homes as TV sets?
    举个例子吧，在20世纪70年代中叶又有谁能想得到在20世纪末的时候，家庭用的计算机会像电视机一样普遍?

2. Stalin pressed for a decision to launch Overlord in May, saying, "I don´t care if it is the lst, 15th,or 20th, but a definite date is important."
    斯大林敦促作出在五月份发动“霸王”行动的决定，他说：“我不在乎是在1号、15号或是20号，但是一个确定的日期是很重要的。”

3. 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。