11.   Then the plants will bush out, putting forth fresh shoots at frequent intervals.

12.   Trains rushed past at frequent intervals.

13.   There are trees such as willows which can be cut and harvested at frequent intervals.

14.   These patients were monitored at frequent intervals by physical examination, measurement of biochemical tests of liver integrity and function, and serological tests for HBV markers.

15.   Monitoring of lorries going through nearby villages takes place at frequent intervals and there are repeated calls for more potash to be transported by train.

16.   And, apparently realizing that his script is uninvolving and lacks momentum, Crowe arbitrarily cranks up the volume and action at frequent intervals to keep us alert.

17.   Air descending the east slopes of the Appalachians will become noticeably drier leading to frequent intervals of sunshine along the coast.

18.   All you want the plot to do is stay out of the way so Chan can uncork his newest package of stunts at frequent intervals.

19.   But at the moment, the chemicals used to remove exhaled carbon dioxide in submarines and underwater habitats have to be replaced at frequent intervals.

20.   Even before it was released, Walt Disney announced his intention to revisit the concept at frequent intervals, generating new installments.