The design required the removal of the existing interior structure while leaving the existing perimeter brick structure and the original part of the front facade intact.

设计要求拆除原有的内部结构，同时使现有砖结构和正立面部分保持原样。

youdao

Dover area schools had required that intelligent design be taught along with evolution.

VOA: special.2009.12.01

Much more sophisticated in terms of the materials that are required and the design thinking that goes behind it.

无论是在所需材料方面,还是设计思路上都更具智慧

耶鲁公开课 - 生物医学工程探索课程节选

With the help of a machinist, and using a formula he concocted for a stiff, self-lubricating plastic, Fenelon built a crude prototype of the gear and found that the torque required to push the window was half of what the old design required.

FORBES: Technology

It said just 19 miles out of the total of 147 met the required design standard of 7.3 metres width.

BBC: Government commits to A9 dualling

It does not make sense economically as ANY alcohol fuel cost more to produce and supply than the gasoline it is replacing especially if you consider the infrastructure improvements necessary to transport and contain the material and the engineering required to design an engine that can run on it.

FORBES: Breakthrough in Biofuels? Maybe.