The electronic conveyor-belt system, which Susan Park (A) adapted from a production-line method (B) pioneered by Thomas Langley, reduced the (C) required time being needed of assembling a SmartGadget device (D) from over ten hours to just 120 minutes.
(A) Excavating ancient rock layers in southern Brazil, researchers have uncovered evidence (B) indicating that complex life-forms (C) emerged far earlier than (D) it is previously believed.