text: Engineers used a variety of high - tech materials, redesigned many key parts of the engine, new valve coordination, and a new exhaust system?
classes:  No, in addition to modifying the design, engineers also need to consider the choice of materials.  Besides, in addition to modifying the design, engineers also need to consider the choice of materials.  Yes, in addition to modifying the design, engineers also need to consider the choice of materials.  Meanwhile, in addition to modifying the design, engineers also need to consider the choice of materials.