He was not called to the bar until 1624, after a not unusual period of preparation.

"I think he was feeling that he's living in an unusual period, and he wanted to document the facts."

You had an unusual period of a very ebullient market and the numbers just went through the roof.

Britain is having a prolonged and unusual period of bad weather.

What followed was an unusual period of shared authority.

"We have these unusual periods from time to time, but I think things will get back to normal next year," he said with a small smile.

A. I'm at an unusual period of my life: after a failed election.

The result has been an unusual period of sampling, he said, in which viewers have switched back and forth between shows far more often.

The Indonesian military is undergoing an unusual period of self-examination.

The soil temperature does not usually drop below 6 C (end 2010 recorded a very unusual prolonged period of snow).