This was the first experimental animal, and the protocol dictated a thirty-minute period of shock.

We had had to pick up a book in one of the outlying suburban libraries during a snowstorm, and it was so tense that I stopped talking - I actually went chatter-free for a full thirty-minute period.

A good speaker typically employs the thirty-minute period of preparation in finding relevant references in magazine and newspaper cuttings, that are later cited during the speech to provide backing.

All students have a thirty-minute free period in the middle of the day, known colloquially as "M Block."

Two thirty-minute periods daily of free play to improve synapse/tool coordination and gross propulsion skiUs.

If you do such exercises fast and you repeat them, and manage to become breathless in the process for a twenty to thirty-minute period, you have combined your suppleness exercise with stamina exercise.

The thirty-minute period was about half gone when motion occurred.

The orders had been clear: the calls were to be placed within thirty-minute periods every six hours commencing twenty-four hours ago, the estimated arrival time of the plane from Amsterdam.

We'll have to run some tests, but right now it looks like all six were offed within the same thirty-minute period.

Shadow bought a thirty-minute period on the morning of March 23, from 9:00 A.M. to 9:30 A.M.