This was a departure from previous physiological understanding, and changed the way scientists viewed the relationship of the lungs to the nervous system.

Is this our previous understanding?

The work on centrifuge fuel, said the report, "is at variance with the agency's previous understanding as to the scope of Iran's decision regarding suspension."

Students endeavor to locate new information and situate it within their previous understanding of the topic.

Over time, new evidence is gathered that changes our previous understanding - often dramatically.

The discharges, however, were not made simultaneously, probably through want of a perfect previous understanding of the orders and of the time at which to fire.

Now a situation exists where a new technology that is based on previous understanding actually increases those fields of knowledge that made it possible.

Scientists are constantly trying to find new situations where previous understanding is either inadequate or does not apply.

It seems likely that the current world situation will invert the previous "understanding" enjoyed by the major countries.

In the end, they'd slapped down a diagnosis and program recommendation based on previous understanding of assassins' test results.