减少烟草(2)
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艾滋病感染得到控制(2)
联合国官方称,现有感染艾滋病病毒的人比他们预期的要少...But U.N. officials say AIDS is still one of the leading causes of death worldwide and the major cause in Africa. African death rates remain ...
远程WI-FI(2)
他们的发明之一是以无线上网为基础的长途网,或者叫远程网络无线保真技术... The networks use antennas aided by relays in places where they cannot be stationed in direct line of sight of one another.W...
“喷火蚂蚁”(2)
“喷火蚂蚁”是一种来自巴西的物种,如今在美国,它已成为一大生物公害But one solution could come from the ants themselves, in the form of a virus that some of them carry. This virus may someday help...
安眠药的潜在危害(2)
科学家发现安眠药除了让人进入睡眠,还有一些潜在的危害The Food and Drug Administration did not say in its announcement how many cases of sleep-driving it has documented. However, the New York Times...