1. It has taken until now to pin down its exact location.

2. We should use our secondary forces to pin down several enemy columns.

3. We can't pin down where the leak came from.

4. The flavour was hard to pin down.

5. She's a difficult person to pin down.

6. He's impossible to pin down.

7. The cause of the disease is difficult to pin down precisely.

8. If we cannot pin down exactly what we are supposed to be managing, how can we manage it?

9. The teacher cannot pin down the essence of ancient poetry.

10. Moreover, any attempt to pin down precisely the behavior of 200 these tiny things turns out strangely counterproductive.

11. The current struggles to pin down the mechanisms underlying both ordinary intoxication and alcoholism are driving this point home with a vengeance.

12. Try to pin down the ones who can not sit still because there is always another exotic place to be.

13. It is hard to pin down something as elusive as a good school climate.

14. Photographs are records and documents which pin down the changing world of appearance.

15. You must pin down every quotation to its author.

16. It was difficult for me to pin down the subject.

17. But Faust are harder to pin down, being more of an exercise in situationism and anarchy than any single kind of sonic form.

18. I've tried asking Stephanie, but she's proving difficult to pin down to a particular date.

19. The difference between the two approaches is hard to pin down precisely.

20. The idea of a crossroads is a difficult concept to pin down because we have to distinguish between different types of changes.

21. On the other hand,[/pin down.html] he was extremely difficult to pin down to any conclusion.

22. Although we will clarify it in the course of this study, multimedia is hard to pin down to a rigid definition.

23. But resistance which is both group-based and informal can be very difficult for management to pin down.

24. There was something about those little feet, Guy thought suddenly, trying to pin down the memory.

25. An explanation from Lipsey for his withdrawal Friday has been hard to pin down.

26. The precise moment when it was first questioned is hard to pin down for sure.

27. Given, then, that volcanoes have a predilection for the seaside, let's now pin down more precisely where they occur.

28. It was little wonder that, during this time, Gergiev proved difficult to pin down for a promised meeting.

29. Since flavour is an emotive as well as a factual quality, it is hard to pin down.

30. It is telling that economists have so far found the precise productivity benefits of information technology difficult to pin down and measure.

1. It has taken until now to pin down its exact location.

2. We should use our secondary forces to pin down several enemy columns.

31. The Boy had to pin down the dog to wash him.

32. To pin down the size of an orbital, we take a contour surface.

33. John Perry Barlow's exact mission in life is hard to pin down.

34. Taiwan question obviously was a key to pin down mainland.

35. It is never possible nowadays to pin down any date within a year or two.

36. But just how, at a deep, cellular level, exercise affects anxiety and other moods has been difficult to pin down. The brain is physically inaccessible and dauntingly complex.

37. The identity of each sex is not so easy to pin down.

38. The researchers were able to pin down the radiation's origination point by combining measurements of the gamma-rays with radio-wave observations.

39. Mill Creek in Meizhou elephant ears pin down the mountain.

40. Damn! That was terrible. I only knocked the 10 pin down.

41. Learn a bit of wine speak — "ripe black plums with an accent of earthy leather" — and you are suddenly equipped with anchors to pin down your fleeting gustatory impressions.

42. Dr. J. : Astronomers have used Hubble to observe cepheids and to pin down their distances much more accurately.

43. In the Han Dynasty(206BC---220AD), "Lari" fell on the day three weeks after Winter Solstice, which was actually hard to pin down or remember.

44. Wheatley and Looser set out to pin down the point at which a face starts to look alive. Looser visited toy shops and took pictures of dolls' faces.

45. It is difficult to pin down the exact meaning of this verb.

46. Despite rampant speculation — that Hoover was gay, a cross-dresser or had no sex life — the truth about his sex life is nearly impossible to pin down./pin down.html

47. Why don't you go work with Chloe and pin down a location on Hector Salazar?

48. Wheatley and Looser set out to pin down the point at which a face starts to look alive.

49. He was sure he would pin down the enemy between two firing lines.

50. The task of their regiment was to pin down one of the flanks of the invading army.

51. Within the smaller area more intensive observations are made to pin down prequake signals.

52. They plan further work in the area to try to pin down the factors responsible.