The face across the platform, seen sporadically through the weaving, colliding crowds, was no illusion.

Furthermore, existing zarzuela is difficult and expensive to play, and is only seen sporadically, by seasons, during a few days.

But his work, with its X-rated subject matter, is only sporadically seen in bulk.

Ivory-bills have been seen sporadically since the end of World War II.

Although the plane-sized bird was seen sporadically during the next decade, the flying saucers stole the limelight.

Red spots were sporadically seen on the mucosa at 10 minutes after the injection of endothelin-1.

It has also been seen sporadically off the east coast of Florida since 1999 and at Oahu, Hawaii since 2005.

Seen only sporadically in 1918, the strip was published daily and was nationally syndicated by the end of 1919.

Background condition number two: During the expedition biots have only been seen sporadically, and never in groups.

Why such devotion to a character that first appeared on television in the 1950's but has been seen only sporadically in recent years?