Sentence examples for been seen before although from inspiring English sources

No such effect had been seen before, although some theorists had predicted that it might occur because of the notoriously shifty properties of matter at minuscule scales.

Although the trapeze had never been seen before, ropedancing can be traced back to ancient Greece.

Although rules provide a way to generalize beyond dictionaries and identify terms that have not been seen before, it is daunting to keep the rules up to date.

Such talents haven't been seen before in cockatoos and although tool use is seen in many species, innovative tool manufacture is rare.

Although all these effects have been seen before on the runways, the finely crafted haute couture has given a new dimension to transparency.

In fact, there are a total of eight entries making their debuts today under Will Shortz's editorial reign, although one of them — RESTRAINED — has been seen before.

Although no cosmologist truly doubts the existence of gravitational waves nothing like today's announcement has ever been seen before.

One of these had not been seen before.

Five had never been seen before.

Such an excess had been seen before.

Many had never been seen before.