This is an approach that is frequently used because engineers have developed cost effective methods to install the SCR reactor while addressing potential interferences from existing equipment.
Engineers have found methods of installing the SCR reactor.
This approach is never used because engineers hate it.
People are on a patio.
A couple of unusually-dressed people gaze at a mountain
The old man was ragged and torn in appearance but, was still clean-shaven with bright eyes.
A girl surrounded by snow
I don't believe he was paid to do anything.
A couple is cutting a cake