The exchange of blood should require a minimum of 45 minutes.

Some foreign exchanges do not require stock prices to be reported as promptly as in the American market.

Many barter exchanges require that one register as a business.

The exchange of signals required slightly more than a minute.

Each exchange requires the presence of money, which is, together with the tomato, the constant element in the story.

Both exchanges now require companies whose shares they trade to have boards with a majority of independent directors.

A short-term exchange lasts from one week to three month and doesn't require that the student to study in any particular school or institution.

Thus the exchange requires both parties to put up an initial amount of cash, the margin.

The exchange had required less than one second.

The spokesman said that since switching to an electronic trading system in 1986, the exchange had required less space.