"Maybe six or seven of them operating simultaneously," he said.

However, that society is complex, and many forces operate simultaneously.

When the toy was set in action, the systems all started to operate simultaneously.

The two schools are able to operate simultaneously because of different schedules.

Both effects operate simultaneously but one or the other term can be dominant.

This did not happen, and both prisons operated simultaneously for the rest of the 20th Century.

"We have two separate labs, and they will be operating simultaneously."

The exchange has decided not to have two trading floors operating simultaneously, he said.

Like the park itself, F1 consists of two tracks that can be operated simultaneously.

"There is in this facility many parts, each of which can operate separately and simultaneously."