开源软件有利非洲(1)
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科学60秒:人类远距离捕猎的秘密武器
“Stand up straight! And do something about that hair!” Annoying? Sure. But such ___1___ may have made humans what we are today. Because our upright stance, and relative lack of hair, may have e...
美诊所及边界加强监测防堵猪流感 (1)
疾病预防控制中心说美国现在只有很少的猪流感病例,但专家们仍然保持警惕。 Richard Besser,swine fluThe Centers for Disease Control and Prevention says there have been only mild cases of swine flu in...
开源软件有利非洲(2)
专家们说开源软件对非洲有益,不仅因为它的免费使用,而且因为可以允许用户改变源代码,这点本身就等于提供技术课程。"By having access to the source code it gives them power they would not otherwise not...
清除耳屎(1)
耳屎对保护人类的耳朵有很重要的作用,而有时人们需要清理一下它Some people's ears produce wax like busy little bees. This can be a problem even though earwax appears to serve an important purpose. E...