But still sufficiently rare to be given special protection under the law.

Severe to catastrophic complications are sufficiently rare that they are reported only as individual case reports.

This surname is sufficiently rare to apparently not appear in the United States Census of 1990.

Some seriously harmful behaviour, such as murder, is sufficiently rare to be inherently improbable in most circumstances.

These are of little concern in practice, being sufficiently rare that they are unnecessary to avoid explicitly when generating keys randomly.

The above method of analysis cannot account for species that are unsampled: that is, species sufficiently rare to have been recorded zero times.

Such events are, however, sufficiently rare that there is no special reason to expect such an impact in the near future.

(Traffic congestion has made high-speed freeway chases sufficiently rare that they are now covered live on the 6 o'clock news.)

This being sufficiently rare, she was inspired to open her eyes.

Once it had been the telephone room; in his day a telephone was sufficiently rare and important to have a room of its own.