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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
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
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
Larry和李华两人正开着车,准备到乡下的一个农场去骑马。今天李华会学到两个常用语:boonies和country bumpkin. (Car driving on country road) LH: Larry,我们要去的那
I love to see the TV show about choosing the people in singing, many years ago, when I was in high school, I would open the TV and saw the live show, many young girls were singing to fulfill their dreams, I liked to see their trying. Today, there are
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