Special cards represent unexpected phenomena and features, for example increasing Income or Resistance of a group.

It was the same curiosity that a scientist would show when he stumbled across a new and unexpected phenomenon.

In some buildings, the designers have begun to note an unexpected, and possibly unsettling, phenomenon.

"It's an unexpected phenomenon, which will be investigated," he said.

The study also suggests that these constraints may be caused by an entirely unexpected developmental phenomenon: competition among growing body parts.

The basis of this unexpected phenomenon is not yet clear.

Its daunting mathematics revealed spectacular and unexpected phenomena like black holes.

But as they began working with the immune-compromised creatures, an odd and unexpected phenomenon developed.

An unexpected phenomenon resulting from the new process.

There are a lot of unexpected phenomena here.