21.   One way they hope to gain such knowledge is to bring patients with different diagnoses into the laboratory and study their eating patterns.

22.   The best rationale for space exploration is to gain scientific knowledge and to search for life forms elsewhere, a task performed most cheaply and safely by unmanned probes.

23.   The more film you watch the more experience you gain, the more knowledge you gain from that situation.

24.   The newcomers, like Hughes and Rove, have taken steps to gain institutional knowledge.

25.   The line astutely captures the way so many people gain any knowledge about the police, and also winks at television cliches.

26.   These studies were designed to gain knowledge that might lead to improved treatments for schizophrenia and related illnesses.

27.   These people gain knowledge of a problem through observation.

28.   They hope to gain some knowledge from oral histories in archives of their grand museum here, a major tourist attraction with thousands of whaling artifacts.

29.   Through it we can gain basic knowledge about how volcanoes work.

30.   Turnover is so rapid that anyone who wanted to take such a job to gain knowledge of the security system for any reason could probably have done so.