front 1 valuable | back 1 having a great value in money; expensive |
front 2 dictation | back 2 the speaking or reading of words for a person to write down or a machine to record |
front 3 radar | back 3 the use of radio waves to track the location, distance, and speed of faraway objects |
front 4 device | back 4 something used to do a simple task or something made (invention) for a specific purpose |
front 5 technology | back 5 inventions and methods of solving problems that are made through research in these areas |
front 6 breakthrough | back 6 an important discovery in an area which leads to better understanding |