牛乳突瘤病毒

By David McAlary Washington 28 February 2007 watch Barry Unger HPV report A sexually-transmitted virus that is a leading cause of female cancer deaths in developing countries is also very prevalent in the United States. It is the human papillomaviru

发表于:2018-12-16 / 阅读(49) / 评论(0) 分类 2007年VOA标准英语(二月)

This is the VOA Special English Health Report. Male circumcision is the cutting off of a small amount of skin from the tip of the penis. In many parts of the world it is done when a baby is a few days old. However, in other parts of the world it is

发表于:2019-01-09 / 阅读(35) / 评论(0) 分类 VOA慢速英语2009年(四)月

英国科学家在男性避孕药研发上有了重大突破,未来男性有可能通过口服阻止精子游动的药丸来达到避孕效果。这可能改变千千万万伴侣的性生活。以后不仅女人可以吃避孕药,连男人都有避

发表于:2019-01-19 / 阅读(72) / 评论(0) 分类 阅读空间

70 疯牛病预防讨论会 DATE=7-17-01 TITLE=AGRICULTURE REPORT - Mad Cow Conference BYLINE=George Grow (Start at 01'0

发表于:2019-01-30 / 阅读(51) / 评论(0) 分类 科技之光

Red meat hardly seems like the perfect ingredient for delicious chocolate, but a New Zealand-based food scientist is willing to bet that his high-protein, 50% beef chocolate recipe is going to be a hit. 红色肉类似乎不可能是美味巧克力的完

发表于:2019-02-17 / 阅读(39) / 评论(0) 分类 阅读空间

I was, in the 1960s, in a marriage. 60年代我结婚了, To use the word bad would be perhaps the understatement of the year. 用糟糕透了这个词都不足以形容 It was dreadful. 简直是糟糕极了。 There are, I'm sure, enough divorced

发表于:2019-03-04 / 阅读(88) / 评论(0) 分类 TED演讲教育篇