至于在约束振动上，切卓卡山和他的同事们使用了压电体，在经受力的作用下，它可以产生电流。
In the case of harnessing vibrations, Chandrakasan and his colleagues use piezoelectric materials, which produce an electric current when subjected to mechanical pressure.
尽管没有人知道它是什么东西，但人们都知道怎样称呼它：“卓帕王子”，根据的是那个著名的神秘吸血兽“卓帕卡·布拉”(chupacabra，是世界第三大著名怪兽，前两位分别是大脚怪和尼斯湖水怪)。
Even though no one knew what it was, they knew what to call it: "Prince chupa," after the mysterious vampire chupacabra (the world's best-known monster after Bigfoot and Nessie).
这款代号为“阿卡什”的平板电脑，由一家具有印度官方背景的高科技公司—数据风暴—开发，其搭载7英寸显示屏，运行谷歌安卓系统，对在校学生的售价为35美元。
The Aakash, which was developed by DataWind, a tech company, with the backing of the Indian government, has a 7-inch screen, runs on Google’s Android and will be sold for $35 to school students.
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