单词：electrical servo system
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听广告学英语:Welcome Electrical Machines惠康电器 原文：Welcome presents you a state-of-the-art offer with a Tamashi home entertainment range. Designed in Europe with advanced Japanese technology, Tamashi combines good-look with technical know how. C
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[00:03.08]Unit 21 Human Biology Lesson 2 Brain Power [00:09.67]Exercise 2 Listen to a science lesson. [00:13.42]Use the strategies to complete the gaps [00:15.74]in this summary. [00:22.96]Right, the topic of today's lesson [00:25.59]is the brain. [0
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Factory workers are about to get super-human strength thanks to Nasa's 'Robo-Glove'. 有了美国航天局（NASA）研发的机器人手套，工厂工人将获超人之力。 The glove helped scientists control Robonaut 2, a humanoid that provided
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17 What did people once think about lightning? [A] It was a natural phenomenon [B] It was a weapon [C] It came from the God 18What did Benjamin Franklin invent in 1752? [A] The first fishing rod [B] The first lightning rod [C] Lightning 19Which of th
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