Sentence examples for has never perceived before from inspiring English sources

An ant exiting the nest only when the record signal reaches a level it has never perceived before could be a very effective mechanism to postpone, until the last possible moment, a potentially fatal decision.

That has never happened before.

This has never appeared before in the literature.

This has never happened before.

has never smoked before.

The frame shift at 408 has never been described before.

Rerouting in the dynamic scenario has never been considered before.

Its prevalence in the Philippines has never been studied before.

Mr. Branagh has never played Macbeth before.

Organization of such treatment programs has never been described before.

To our knowledge, this complication has never been described before.