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科学美国人60秒 SSS Some Malaria Mosquitoes May Prefer Cows to Us

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)

2016年Scientific American(九)月

EXPLORATIONS - Keiko the Whale

EXPLORATIONS - November 27, 2002: Keiko the Whale By Jerilyn Watson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we te

发表于:2019-01-02 / 阅读(81) / 评论(0)

Explorations

EXPLORATIONS - Koshland Science Museum

EXPLORATIONS - Koshland Science Museum By Broadcast: Wednesday, March 02, 2005 (MUSIC) VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Faith Lapidus with the VOA Special English program EXPLORATIONS. T

发表于:2019-01-10 / 阅读(275) / 评论(0)

Explorations

Italy lacks energy for economic revamp

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)

英语新闻

科学美国人60秒 SSS 2016-8-15

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)

2016年Scientific American(八)月

万物简史第509期:丰富多彩的生命(5)

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)

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balanced percentage of reinforcement

banging on