单词：carbanions
[网络] 碳负离子；负碳离子；碳负离子的潜在来源
单词：carbanions 相关文章
Health Report - Spray Shows Promise in Malaria Study in Benin 健康报道 - 室内喷洒杀虫剂可减少疟疾传播 This is the VOA Special English Health Report. 这里是美国之音慢速英语健康报道。 Malaria is caused by a parasite sp
2011年VOA慢速英语(十二)月
一个英语单词可分为三部分：前缀（prefix）词根（root）后缀（suffix）。位于词根前面的部分就是前缀。前缀，可以改变单词的意思。 carb-, carbo- 表示碳 carbon = carb + on n. 碳 carbohydrate = carbo + h
英语PK台
Finches Seek Out Sick Dining Companions A study in the journal Biology Letters finds that male finches prefer dining next to a sick bird despite the risk of infection, probably because the lethargic companion is less likely to engage in food fights.
60秒科学
In the English language, putting two -ing words together often is not only natural but correct. Listen to an example: Ive been avoiding going to the doctor. In todays Everyday Grammar, we will look at examples of when two or more -ing words appear ne
2018年VOA慢速英语(三)月
What you eat affects more than physical health. Two new studies have added to the growing evidence linking the stomach and the brain. In a report in the Proceedings of the National Academy of Sciences, researchers studied how junk food can trigger ad
Scientific American(十一)月
FRITZI BODENHEIMER: This is SCIENCE IN THE NEWS in VOA Special English. I'm Fritzi Bodenheimer. FAITH LAPIDUS: And I'm Faith Lapidus. Winter conditions are affecting many countries in Earth's northern hemisphere. Winter brings cold weather and, with
2010年慢速英语(二)月
Diet and the Brain A study in the Proceedings of the National Academy of Sciences finds that brain chemicals linked to addiction are in play with a high-sugar diet, and a study in the Archives of Internal Medicine shows that a high-carb diet had last
60秒科学
SCIENCE IN THE NEWS - Diet News / Big Plans for Losing Weight / New Drug for Malaria By Broadcast: Tuesday, June 01, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Sa
科技之光
The case for prenuptual agreements may have just gotten stronger: According to a new survey by credit-tracking company Experian, 16 percent of newlyweds admit they are hiding a financial account from their spouse. 婚前协议的案例与日俱增。信
实用英语
VOICE ONE: Many people who try to lose weight know that no diet is perfect.But two new studies show that a diet low in carbohydrates can cause faster weight loss than a diet low in fats. This was true at least in the short term. Researchers published
英语杂谈
There are lots of different diets. On of them is called the low-carb diet. If you were on a low-carb diet you would eat... 节食方法有很多种，有一种叫做低碳水化合物饮食，若你就是这种情况，你会吃什么呢？ a) less fish b) less pasta（意大利面条） c) les
六分钟英语
Spraying Insecticide Indoors Reduces Spread of Malaria Researchers in West Africa have shown that spraying insecticide indoors can dramatically reduce malaria transmission. Efforts to develop a malaria vaccine have so far been disappointing, so progr
VOA标准英语2011年(十月)
STEVE INSKEEP, BYLINE: Some people who watch what they eat may be overlooking the most important things. Counting calories is a bit too simple. Cutting carbs is a bit too hard. So what can you do? NPR's Allison Aubrey has a different strategy. ALLISO
2019年NPR美国国家公共电台1月
Don: Today on A Moment of Science Yael and I are talking about... lunch. Yael: Actually, we're going to talk about Don's lunch--and just how healthful, or unhealthful, it is. D: Well, I don't think you're gonna see too much unhealthful stuff, Yael. T
英语时差8，16