However in May 2009 a third line was brought into operation.

The second part of their plan must be put into operation.

The new system came into operation with the start of the 2012-13 season.

Have the air system put back into operation at once.

But why shouldn't staff put the same process into operation lower down the school?

We put our plan into operation and stopped the car.

The system is expected to go into operation by the end of 1989.

They would go into operation by the end of next year.

In early 1969, the new building was put into operation.

But the new Building 371 has never been put into operation.