He withdrew into silence as if it were a chrysalis, an armor for some special vulnerability or metamorphosis.

Economists and business leaders said the findings highlighted the special vulnerability of the city's economy to sudden shocks, because it is so dominated by a single industry.

"She seems to have a special vulnerability."

Social Security numbers themselves create a special vulnerability.

A researcher notes that the hours from 1 to 6 A.M. seem to be a period of special vulnerability.

Doctor Druid's druidic powers have a special vulnerability to iron, as did the powers of his ancestors.

The report shows that peacekeeping forces sent in to deal with local conflicts too often ignore the special vulnerability of children.

"And if we don't stand up for reform, we have a special vulnerability," Mr. Bradley said.

Nevertheless, the controversy has raised the question of whether performers and others in highly competitive fields have a special vulnerability to drugs.

The next CAP reform must focus on the special vulnerability of certain livestock sectors and the significant production costs that farmers undertake.