We've never encountered phenomena like this and it might not work exactly to our expectations.

Peasants whose families had lived on the same land for generations said they'd never encountered such strange phenomena.

They are unlike any phenomenon ever encountered in my experience, certainly not any sort of spacecraft.

But rationality seems to break down when we encounter phenomena that smack of "evil."

Instead, they reflect one of the most mysterious phenomena encountered in psychiatry: recovery.

I have, as captain of this vessel, encountered phenomena on other missions that lack adequate explanation.

The electromagnetic force is the interaction responsible for almost all the phenomena encountered in daily life, with the exception of gravity.

The group of friends begins encountering increasingly more strange phenomena as the novel progresses, including flying.

In September 2006 the Martian colonists start to encounter strange phenomena.

Reasonable people sometimes encounter unexplained phenomena only to be told, tut-tut, that science makes no room for personal anecdote.