31.   Not much can be done to prevent these attacks other than constant vigilance and the political resolve to move quickly against known threats.

32.   Officials and parents say there is no substitute for constant vigilance in the water and preventive steps to keep kids out of unsupervised pools.

33.   Protecting the great principles of the Constitution against selfish special interests requires constant vigilance.

34.   Protection of the Constitution, however, needs constant vigilance.

35.   Q. What about a girl who is careful to watch what she eats, maintains a constant vigilance and looks a little round?

36.   That takes constant vigilance.

37.   The chronic dieters, through their constant vigilance, are keeping their weights as low as their genes will allow.

38.   While authors of both studies emphasized the rarity of surgeon-to-patient transmission of hepatitis, they stressed the need for constant vigilance to prevent such transmission.

39.   But the declaration will work only if it is backed by constant vigilance, with people speaking out when they see inhumanity, Annan said.

40.   But the declaration will work only if it is backed by constant vigilance.