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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? As a bitter winter storm rages on the east coast, it's hard to knock being warm-blooded. But what about the metabolic cost of maintaining a high body-temperature? Well,
Scientific American(十二)月
PartI Getting ready A: 1.Freezing point 2.Relative humidity 3.Calm 4.Barometric pressure 5.Wildly scattered 6.Shower 7.lows 8.Variable 9.Thunderstorm 10.Gales B. 1.the freezing point of water is 0 or
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This is the VOA Special English Agriculture Report. Heat and drought are threatening some of America's most productive farmland. The Department of Agriculture says an early summer heat wave across the West has increased demand for water to save dry c
VOA慢速英语2007年（七）月
Extremely cold weather is a problem in many parts of the United States. The Associated Press reported Wednesday that record-setting temperatures have been blamed for at least 12 deaths in recent weeks. Some forecasters say the worst weather is yet to
2018年VOA慢速英语(一)月
AS IT IS 2016-07-29 UN: World Temperatures Rising Faster Than Predicted 全球升温速度超出预期 The United Nations World Meteorological Organization says the first half of this year has been the hottest in recorded history. 联合国世界气象
2016年VOA慢速英语(七)月
数据服务器可以给家庭供暖 As every computer owner knows, when their machines run a complex program they get pretty hot. In fact, cooling the processors can be expensive, especially when you're dealing with huge banks of computer servers. B
VOA标准英语2015年(九月)
The toucan's long bill has long perplexed biologists. Darwin theorized that it attracted mates. Other suggested uses ranged from fruit peeling to territorial defense. But a report in the July 24th issue of the journal Science offers another explanati
Scientific American(七)月
Welcome to the Bottom of the World Antarctica is the highest, driest, and coldest place on Earth. It is also the remotest, a fact which accounts for its unspoiled environment. It is difficult for peop
有声英文阅读
HEALTH REPORT - U.N. Warns of Coming Risk to Africa From Bird FluBy Cynthia Kirk Broadcast: Wednesday, January 25, 2006 I'm Steve Ember with the VOA Special English Health Report. Wild birds could car
2006年慢速英语（一）月
Broadcast: Jan 21, 2003 By Gary Garriott Drying food is a simple, low-cost way to keep food safe for eating. Drying removes water that small organisms use to break down food into other substances. Som
VOA2003（上）-社会广角
PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat
Scientific American(十)月
Pearl Oyster 珍珠贝 Do you know where pearls come from? 你知道珍珠产自哪里吗？ Expensive jewels usually come from big mines. 昂贵的珠宝通常产自大矿山。 However, believe it or not, pearls come from pearl oysters in the sea. 然
与美国小学生一起学英文第4册
This is the VOA Special English Development Report. Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So
VOA慢速英语2008年（十一）月
This is the VOA Special English Development Report. Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So
VOA慢速英语2007年（五）月
VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Steve Ember. This week, we will tell about an American study of the brain disorder schizophrenia. We tell about cars that use hydrogen as fuel. And,
VOA慢速英语2008（十）月
What Is the Polar Vortex? Record cold weather in the United States is forcing schools and businesses to close. The polar vortex, as it is called, has also canceled flights and suspended mail delivery. The temperature in Fargo, North Dakota, dropped t
2019年VOA慢速英语(二)月
BEIJING, Aug. 14 (Xinhua) -- Kai-Tak, the 13th tropical storm of the year, is approaching China's southern regions, the country's meteorological authority forecast Tuesday. Kai-Tak, moving northwest at a speed of 15 to 20 km per hour, will graze or l
英语新闻
Currently 64 trains made by China's CNR are operating in Rio de Janeiro, transporting some 680 thousand people per day. Last year, the Chinese EMU trains were proved reliable after safely transporting 11 million people during the 32-day Brazil World
2015CRI中国国际广播电台
You've read the books, 阅读那些慰藉心灵的书本 You've watched the shows, 观看那些搞笑的综艺节目 What's the best way no one knows, yeah, 可惜没有人知道什么才是最好的方式 Medicated, hypnotized. 药物 催眠 Anythin
听歌学英语
台湾籍旅美老师今天交给我们的句子是： But this measures the availability of energy in food, not the digestibility. A calorie is a unit of energy. It's technically the amount of energy needed to heat up a kilogram of water by 1 degree
留美老师带你每日说英文