单词：branching of polymer chains
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Armani is known all across the world for being a leader in style. The Italian fashion house was founded by legendary designer Giorgio Armani in 1975. It is today one of the fashion worlds most prestigious names. It produces a wide range of clothes, a
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[00:04.41]Lesson 53 1 Reading comprehension [00:11.47]Read the text fast to find answers to these questions [00:17.95]1 What happened to Kunta in this story? [00:23.59]2 What do you think happened to many of the black people on the ship? [00:29.36]JO
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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
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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
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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
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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
60秒科学
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
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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
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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
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Breaking the chains ~演唱者：dokken (dokken, lynch) Sit there thinkin' In your room You feel the pressure You're goin' crazy too The walls around you Closin' in You need a change Claustophobic Feelin' scared You need somebody But no one seems to
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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
2016年VOA慢速英语(九)月
'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
VOA标准英语2016年(二月)
他特别热衷于巡回演出，曾先后在美国、加拿大、日本等地巡回演出。 Richard Marx深知在全球性的演出中，会大大促进乐迷与自己的直接交流，他深信，这种影响将是深远的。 歌词： Song：Cha
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DAVID GREENE, HOST: Seven big fast-food chains have backed down under pressure. They've agreed to stop blocking workers from taking jobs at other restaurants in the same chain. Washington state's attorney general was threatening to sue over this. And
2018年NPR美国国家公共电台7月
听歌学英语:Traveling Light 演唱者Joel Hanson和Sara Groves是两个乡村歌手,Joel 是一个优秀吉他弹奏者,在与Sara Groves合作前发行过两张专辑《broken》和《Interview》。与Sara Groves合作的第一支单曲就是《
听歌学英语
As domestic tourism booms in India and a growing economy creates wealth beyond the countrys urban hubs, international hotel groups are pushing into smaller towns and cities. Luxury hotel chains in Jaipur As the winter chill recedes and spring sets in
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Can I Come Down Now? 现在我可以下来了吗？ As one of natures top predators, the tiger is not an animal that we would ordinarily think of as being chicken. However, one tiger, which lives in an English zoo, turned out to be more cowardly than
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Life had just started, never aparted Were my aims for times to come, my future was bright Promised before me Way brighter it will be So foolish I was then, I just couldn't see Tricked me and fooled me, trap set up by thee Now you shall pay, time for
英文摇滚歌曲
These chains that bridles me that kept me from being free these chains held me down for far too many years all of this time has been in vain now is the time to break these chains You cannot change me you cannot break me 'cause there's strength in me
英文摇滚歌曲