1.   Even physics does not understand the nature of an electron and electrical charge.

2.   Few theatre managers understood the nature of the gases which they handled.

3.   For everyone there is a problem in understanding the nature of the crime when no motive can be identified.

4.   He very likely does not understand the nature of the risk that he describes.

5.   They did not understand the nature of honour or how to win glory in battle.

6.   This is highly significant for understanding the nature of his perceived relationship to his government.

7.   To understand the nature of this challenge, we must first come to terms with the concept of a physical field.

8.   Business clearly understood the nature of the problem.

9.   Persons who do not understand the nature of the act cannot give consent.

10.   She is silently waiting for me now to understand the nature of what she is offering me.