单词:polymersomes
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CHAPTER FIVE READING Some Days [00:10.68]I didn't find it interesting,listening, I didn't find it interesting,talking, [00:23.07]so I lelf the house-I went miles and miles- [00:31.32]And I didn't find it interesting,walking, [00:36.96]I didn't find i
Lesson 48:Did you want to tell me something? 你想对我说什么吗? First listen and then answer the question. 听录音,然后回答以下问题。 Why did the writer become very worried? Dentists always ask questions when it is impossible for
We present the short story The Ransom of Red Chief by O. Henry. Here is Shep ONeal with the story. (MUSIC) SHEP ONEAL: It looked like a good thing. But wait till I tell you. We were down south, in Alabama Bill Driscoll and myself when this kidnapping
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t
This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because
Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c
Lowering the Ceiling on Roof Energy Losses Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because traditional black asphalt roofs heat up in summer and s
SCIENCE IN THE NEWS - Is the Human Brain Still Evolving? Some Scientists Think So By Katherine Gypson, George Grow and Dana Demange Broadcast: Tuesday, November 01, 2005 (MUSIC) VOICE ONE: This is SCI
在这次节目里我们要给大家介绍两个以
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor
Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene
Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o
By Lisa Schlein Geneva 25 September 2009 Somalia The UN refugee agency says conflict and drought are forcing thousands of Somalis to flee to Kenya. The UNHCR reports about 6,400 refugees are arriving in Kenya every month, creating further pressure o
U.N. Deputy High Commissioner for Human Rights Kyung-wha Kang is calling for the international community to combat the culture of impunity that has fueled more than two decades of war in Somalia. Kang's comments followed an official two-day tour of t
Mogadishu Offers Little Comfort to Somalis Arriving From Famine Famine is forcing Somalis by the hundreds of thousands to leave their homes in search of survival. Some are fleeing across the border to refugee camps in Kenya and Ethiopia, where intern
'Smart' Bandages Could Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded
A group of more than 50 organizations providing humanitarian assistance in Somalia called for increased international attention to the situation in the country. As Derek Kilner reports from VOA's East Africa bureau in Nairobi, the groups assert that
By Alisha Ryu Nairobi 02 October 2009 Kismayo, Somalia Al-Shabab militants in Somalia have claimed control of the country's southern port town of Kismayo, one day after deadly fighting with a rival Islamist group. But the city remains tense amid rep
take sombody's mind off 使某人忘记 I bought myself a little gift to take my mind off my problems. 我给自己买了一个小礼物,让我忘掉所有的烦恼。 Maybe it'll take your mind off Betty. 也许这会让你忘掉贝蒂的。 Just