Sentence examples for not been observed from inspiring English sources

Copulation has not been observed.

Wire breakage has not been observed.

One place the blackout has not been observed?

Intra-Holocene river changes have not been observed.

This behaviour has not been observed in homogeneous polymer melts.

Shear bands and twins have not been observed.

They have not been observed drinking, and likely obtain water from leaves and insects while feeding.

A glitch of this size has not been observed on Chandra's gyros before.

As yet, Sudden Oak Death has not been observed in the East Bay.

In addition, we report an important effect of carbon monoxide that had not been observed previously.

So far, such plumes have not been observed around East Antarctica, Jamieson said.