| A | B |
|---|
| contemplated | thought about for a long time |
| invaluable | having great value |
| model | a small copy |
| converts | changes |
| devise | invent |
| efficiency | ability to produce the effect wanted without waste of time or energy |
| generated | produce |
| percentage | allowance figured by percent |
| proclaimed | declared publicly |
| reproduce | to make a copy of |
| transmitted | sent out signals by means of electromagnetic waves or by wire |
| dictation | words said or read aloud to another person who writes them down or to a machine that records them |
| exclusive | not divided or shared with others; single; sole |
| persistence | act of refusing to stop, change, or give up |
