SSS 2008-12-31
时间：2018-12-02 作者：英语课 分类：Scientific American(十二)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.
It’s the time of year to take a look back—and that’s just what the journal Science did as they listed their most important breakthroughs of 2008. At the very top of their list: reprogramming cells. Scientists were able to successfully transform cells from ill patients into stem cells. This is important in understanding exactly how cells develop, and it could be a crucial step in finding a way to treat disease by using a patient’s own cells.
A few other top achievements of 2008:
-For the first time, scientists have been able to actually see planets orbiting a distant star.
-A team discovered a catalyst 1 that can facilitate using electricity to split water into hydrogen for a fuel cell.
-An entirely 2 new family of high-temperature superconductors was discovered.
-And there’s been a genome sequencing bonanza 3, as new techniques make the process faster and cheaper. Mitochondrial genomes sequenced this year include extinct cave bears and most of a wooly 4 mammoth 5. Not to mention a first draft of the full DNA 6 sequence of a Neanderthal. Their genome sequence could explain why they never could sequence genomes.
Thanks for the minute for Scientific American's 60-Second Science. I'm Cynthia Graber.
- A catalyst is a substance which speeds up a chemical reaction.催化剂是一种能加速化学反应的物质。
- The workers'demand for better conditions was a catalyst for social change.工人们要求改善工作条件促进了社会变革。
- The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
- His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
- Bargain hunters enjoyed a real bonanza today.到处买便宜货的人今天真是交了好运。
- What a bonanza for the winning ticket holders!对于手持胜券的人来说，这是多好的运气啊。
- I like the feel of this cloth and it has a warm wooly feel.我喜欢这块布的手感,它摸上去毛茸茸的很暖和。
- He wore a brown t-shirt with jeans and a pair of shoes,with a wooly hat covering his hair.小贝身穿一件棕色t恤，搭配牛仔裤和皮鞋，头戴一顶盖住头发的羊毛帽子。