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Most roads, bridges, transit, water systems, the electric grid, and communications networks were installed 50 to 100 years ago, and they are largely taken for granted until they fail.
出自-2017年6月阅读原文
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However, this is the first time a panel has been designed to be laid directly on top of existing roads and the first project to install the panels on public highways.
2017年12月四级真题(第二套)听力 Section A
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It's certainly new territory, especially as home security cameras become easier to install, says lizzie Post, president of the Emily Post Institute, America's foremost manners advisors.
2018年12月四级真题(第二套)阅读 Section C
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So any parents who install Smart Wheel can keep track of the teens' driving habits.
2018年6月四级真题(第二套)听力 Section C
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Stawood Hotels and Resorts, which owns more than 1, 150 hotels in nearly 100 countries, plans to install the system in the next three months at two of its hotels in the USA.
2015年12月四级真题(第二套)听力 Section A
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The panels are also designed so that they can be installed directly on top of existing roadways, making them relatively cheap and easy to install.
2017年12月四级真题(第二套)听力 Section A