While innovations in racket and string technology have previously introduced more power into the game, the players themselves are responsible for the changes happening today.

球拍和球弦的革新以前可能为比赛带来了更多的力量，但如今球员们自身要为今天发生的变化负责。

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The list also reveals significant changes in the technology used to power the machines and the nations hosting the most powerful ones.

这个名单也揭示着提高机器能力所使用的技术和拥有最强大计算机的国家的显著变化。

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Because no power is used unless the reader changes the page, devices with the technology could go as long as 20 books between battery charges.

由于只有当用户翻页时才会耗电，所以采用该技术的装置能让读者连续看20本书而不需要充电。

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In contrast, Google is a recognized a leader in Silicon Valley at devising new ways to store and generate data more efficiently, to operate massive data centers with thousands of computer servers more cheaply, and to utilize the power of digital technology to pioneer disruptive, cost-reducing changes in traditional markets, from email to travel booking services.

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Finally, both of these changes are being enabled through the integration of smart grid technology in the power transmission and distribution grid, which moves not only electrons but also information effectively through our energy networks.

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