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.
2017年6月四级真题（第二套）阅读 Section C
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
A CFL cannot be simply installed in an incandescent fixture and then expected to produce a visual appearance that is more than washed out, foggy, and dim.
2015年12月六级真题（第一套）阅读 Section B
By 2030, Germany plans on having over 6 million charging stations installed.
2017年12月六级真题（第三套）阅读 Section A
More than 90 meters of cable were incorrectly installed.
2019年12月六级真题（第二套）听力 Section C
There are some very commendable characteristics of the CFL (compact fluorescent light bulb), yet the selection of any light source remains inseparable from the luminaire that houses it, along with the space in which both arc installed, and lighting requir
2015年12月六级真题（第一套）阅读 Section B
They are trying to make sure that 5g terminals will have been installed by 2022 for the beijing winter Olympics.
2019年高考英语江苏卷 单项填空 原文