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Chrissy: Wow, that movie was amazing, but I cant believe that they blew up the Eiffel Tower. I bet the French are really pissed. Jack: Youre kidding, right? They didnt really blow up the Eiffel Tower. They used special effects to make it look that wa
地道美语播客
最新研制一种新的医疗设备，可以利用身体动作来充电。 Novel materials could allow the implantation of flexible, rechargeable batteries that would constantly recharge from the body's own movements--even just breathing. Cynthia Gr
60秒科学
This is Scientific Americans 60 Science, Im Cynthia Graber. Thisll just take a minute. Batteries add weight, and they need recharging. Thats serious business for implanted medical devices. When the batteries die, patients sometimes have to undergo an
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M.I.T. researchers have developed a piezoelectric fiber that would react to electric currents and have the potential to record or produce audio. Clothing is so yesterday. I mean, really, what can it do? It cant pick up sound, or beep at us if somethi
60秒科学
ENVIRONMENT REPORT - November 29, 2002: Effects of Oil Spill Near Spain By Cynthia Kirk env-spain-oil-spill-effects (RealAudio) env-spain-oil-spill-effects (MP3) This is the VOA Special English ENVIRO
健康与环境
The World Health Organization calls tobacco the leading cause of preventable death in the world. In December, the WHO launched a campaign against cigarette smoking in Africa, saying a rapidly growing population is creating larger and more accessible
VOA标准英语2010年(三月)