It is not an infrequent occurrence that an author from an academic press will attract the interest of a trade publisher.

Her favorite moment is the infrequent occurrence in the street when a stranger walks by wearing the cologne.

This is not an infrequent occurrence in youth soccer.

In cases of extreme observations, which are not an infrequent occurrence, the typical values must be analyzed.

Chapter Fourteen earthquakes had been an infrequent but not unknown occurrence on this world.

Of great importance is the possibility that extremely infrequent occurrences are more likely than anticipated.

Snow can fall at any time from early November through to late April, but it is an infrequent occurrence.

In Europe and other continents where the species has been introduced, naturalization is an infrequent occurrence.

There are 65 beds and, today, only 57 patients - an infrequent occurrence.

It has on a very infrequent occurrence been caught at sea.