But it has been an expensive operation to maintain, costing about $100 million a year.

But one would need to look close, as it had been an expensive and painstaking operation.

That will make it an expensive operation for them, won't it?

Just five years ago they were looked at as high-risk, expensive operations, but probably the right thing to do.

Some have asked why such an expensive operation should be performed with little chance of survival.

From the limited evidence available, it seems fair to ask if the food situation would not have resolved itself without the tremendously expensive military operation.

After all, the league was an expensive operation to run.

This was an expensive operation, but the costs would be recuperated within a few years.

The concert was a benefit to raise money for a young boy who had to have an expensive operation.

Drilling a well is a difficult and expensive operation.