塞内加弯孢菌

As you've probably experienced firsthand, some mosquito species have a real taste for warm, human blood. So much so that if you raise them on it the lab, they'll accept no substitute. Fortunately, I don't get major reactions at all. Brad Main is a mo

发表于:2018-12-24 / 阅读(63) / 评论(0) 分类 2016年Scientific American(九)月

ROME, Dec. 3 (Xinhua) -- Italy lacks the necessary energy(能量,活力) and strength for an economic revival while unemployment and poverty are on the rise, warned a report issued Friday. The 44th edition of the Censis think tank social survey, the

发表于:2019-01-19 / 阅读(85) / 评论(0) 分类 英语新闻

In Africa's battle against malaria, two low-tech tacticsinsecticides and bed netshave done a decent job killing off mosquitoes. But it's mainly one species that's been affected. That's a species called Anopheles gambiae, sometimes called the African

发表于:2019-01-20 / 阅读(69) / 评论(0) 分类 2016年Scientific American(八)月

By Nico Colombant Dakar 09 April 2008 Senegal's parliament has changed the constitution to make it possible for national courts to try crimes against humanity. This paves the way for a possible trial of exiled former Chadian leader Hissene Habre over

发表于:2019-02-05 / 阅读(61) / 评论(0) 分类 VOA常速英语2008年(四月)

By Kari Barber Dakar 01 November 2007 European Union officials say plans are in place for a joint European Union-African Union summit to be held later this year. However, Senegalese officials said in a meeting with EU leaders in Dakar late Wednesday

发表于:2019-02-07 / 阅读(38) / 评论(0) 分类 VOA常速英语2007年(十一月)

You might not think there would be that many people in the world prepared to devote lifetimes to the study of something so inescapably low key, 你或许会认为,世界上不会有多少人愿意花毕生的心血来研究那个不起眼儿的东西

发表于:2019-02-21 / 阅读(75) / 评论(0) 分类 万物简史