Major improvements were made from the late 1970s until early in the 1990s.

I have seen a major improvement in just the last year.

To his way of thinking, that was a major improvement.

A small price to pay, after all, for a major improvement.

That knowledge, they said, can lead to major improvements in care.

After that, a year later, they made a couple of major improvements to the design.

However, the club saw major improvements over the first season.

But hey, its a major improvement from anything he has done so far.

A major improvement is required in the administration of the security guard program.

There were no major improvements in the standard of living.