Since the 1970's fiscal crisis, a few buckets of grass seed at sporadic intervals were about all the attention it got.

Only at sporadic intervals do the letters inform the action.

Arrows began to sink into the trunk of the fallen bluetop at sporadic intervals.

In recent years, the station has been "on and off" the air at sporadic intervals.

Clearings opened at sporadic intervals, large enough to admit something of size.

Thereafter the number of unexpected attacks by the Murge fell off rapidly: but they still continued at sporadic intervals.

The clouds hung low in the sky and drizzled on the leaves at sporadic intervals.

Rapids danced around them, drenching them at sporadic intervals with ice-cold spray.

Mills' parents are separated, although both feature in the show at sporadic intervals.

Between 1634 and 1760, having been requested to do so by the Zürich authorities, the priests kept detailed records of population size, albeit with sporadic intervals.