Let's master example sentences and the make-up of text by dictation.

I don't know this system, but the man in charge will explain.

Lately the discount airline ticket system has gotten so complicated that there's a lot about it I can't figure out.

Economics is the study of economic mechanisms.

The third is the preservation of environment. In this case, the conservation of energy and resources is needed.

The loss of childhood spontaneity has caused widespread concern, as well as calls for review of the nation's educational and social structures.

The political systems of Britain and Japan have a great deal in common.

The stock market is a wonderfully efficient mechanism for transferring wealth from the impatient to the patient.

Can you explain how this machine works?