Sometimes the system goes through five minutes before the class is over.

Because once the system goes down, so does your computer.

We don't know yet which system is going to be the most effective.

Give them a cause like this, and the whole system will go down.

But now the system had gone - what did they believe in?

"All the systems that have been put in place are not going to change."

In 10 or 15 years, the whole system is going to be this way.

All systems are go and your wife left you a message.

This system has been going on for a long time.

It was not the first time the 911 system went down.