VOA慢速英语2014.05.25 actually, evening, against, outside, occurring

Rebecca949

"Filariasis is only picked up by mosquitoes late in the evening, so this is the time when people are more likely to be protected by their bed nets. So we found that bed net use actually is a greater barrier against filariasis transmission whereas malaria transmission may still be occurring outside the times when the user is under the net."她说,"丝虫病只会由深夜的蚊子携带,这是一个人们很可能受到了蚊帐保护的时间.所以我们发现,使用蚊帐实际上是防止丝虫病传播的一个重大屏障,然而疟疾传播还是可能会在人们未在蚊帐里的其它时间发生."
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