1.   Another is the difficulty of moving from the theoretical discussion to the specification and testing of an empirical model.

2.   I want to broaden the discussion to other aspects of the problem.

3.   I wanted to shift the discussion back to the main point.

4.   Transferring the image from a microscope via a television system has many attractions from simplifying group discussion to providing the basis for image analysis.

5.   Here I propose to confine my discussion to the contemporary debate surrounding the electoral system as an electoral system.

6.   Any number of levels is possible but, in what follows, we shall restrict discussion to such two-level hierarchies.

7.   And despite the length of his speech, Clinton gave little serious discussion to the foreign policy challenges facing the country.

8.   As Dole and Ms. Couric continued to tussle, Mrs. Dole tried to nudge the discussion to friendlier ground.

9.   Because past meetings of the nomination committee were known to drag on, Tony rules now limit discussion to a maximum of two hours.