单词：Helix hortensis
单词：Helix hortensis 相关文章
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
2016年Scientific American(九)月
AMERICAN STORIES - Short Story: 'One Thousand Dollars' by O. Henry FAITH LAPIDUS: Now, the VOA Special English program, AMERICAN STORIES. (MUSIC) Our story today is called One Thousand Dollars. It was written by O. Henry. Here is Steve Ember with the
2011年VOA慢速英语(八)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
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
2016年Scientific American(八)月
It would be a brilliant place for hunt together as to hides and observe the movements of these huge animals. Topographical scans have revealed the contours of this ancient landscape, features that mesolithic kind togetherness could exploit. Where the
探索与发现2015年
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
万物简史