"Has to be able to withstand long exposure to salty environment without a lot of expensive maintenance."

The road carried heavy traffic and required expensive maintenance by the authorities to repair.

What a smart idea to plant wildflowers that will live happily in our climate without expensive maintenance.

And it gave us a huge load of operational data on where, exactly, reusable systems break down and need the most expensive maintenance.

And on some campuses, Yale being one, aging academic buildings need expensive maintenance.

But the diesels require expensive maintenance and sometimes fail in tests, requiring a plant to close while they are fixed.

The current bridge replaced an older one that required constant, expensive maintenance.

Others pointed out that Rover cars, over the years, have had a reputation for expensive maintenance.

The electric system needs very expensive maintenance and can damage the towers.

"While I love the beauty of these materials," he said, "they require far more expensive maintenance than an ordinary restaurant."